Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffbd2c1ce3e1bbfd…

MALICIOUS

PDF

99.8 KB Created: 2021-06-28 17:50:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 7c384b0064dd19fa00f04318c7d64ed9 SHA-1: 434ad73fca89f578e682de23321fb9cd95b4fe18 SHA-256: ffbd2c1ce3e1bbfd89ab708c20648f66785aab5e0a6314aaa031abac40d5f923
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Numerous heuristics fired, including external URI links and links pointing to IP addresses and compromised CMS uploads, suggesting the PDF acts as a lure to external malicious sites. The presence of PDF_URI and EMBEDDED_URL findings indicates the document contains links to external resources, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9800

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://www.eziblank.com/wp-content/plugins/super-forms/uploads/php/files/5n3i7u0vi4ideala96r4ueg5a3/benogamudatijadujaziz.pdf In PDF document text
    • https://paloaltospeakerseries.com/wp-content/plugins/super-forms/uploads/php/files/77ba69caba54e414272343e4e42d8608/sejurosi.pdfIn PDF document text
    • http://mai-colle.jp/userfiles/file/vokavefifirozokuguzusema.pdfIn PDF document text
    • https://betalinktech.com/blmedia/file/16822295742.pdfIn PDF document text
    • http://blog.crowdly.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a06aead465---23677427366.pdfIn PDF document text
    • https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073c59c94431---94992574193.pdfIn PDF document text
    • https://zzarosiscarampola.it/file/23508078541.pdfIn PDF document text
    • http://157.230.241.115/image/upload/File/5873828693.pdfPDF link annotation
    • https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/96b97301cb7f2bb604d6336b5dfb4708/sisuroba.pdfIn PDF document text
    • http://ash-graphy.com/userfiles/file/divox.pdfIn PDF document text
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/16073be90a86f7---ruzililirimatibi.pdfIn PDF document text
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/g9093684muskavje7vdgcl9mb0/89601542629.pdfIn PDF document text
    • http://1careglobal.com/upload/files/41548857390.pdfIn PDF document text
    • http://kokocurry.gm/userfiles/file/95684704066.pdfIn PDF document text
    • http://ride.hu/images/uploads/files/7156238916.pdfIn PDF document text
    • http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080580d88155---45023235005.pdfIn PDF document text
    • https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/16091b24305369---xuzaz.pdfIn PDF document text
    • https://www.truegridpaver.com/wp-content/plugins/super-forms/uploads/php/files/28dfebada3cac48c57aead636cfa4dcc/govatipefewuxefufi.pdfIn PDF document text
    • https://kraftyz.in/ckfinder/userfiles/files/potopesokemirerapififuxa.pdfIn PDF document text
    • http://inlovehuahin.com/file_media/file_image/file/xaxadonegoxomigoxiru.pdfIn PDF document text
    • http://macabrey-luthier.fr/data/Files/57106624689.pdfIn PDF document text
    • https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/dc4133b4e93a26fadba51fcaacead63d/282152407.pdfIn PDF document text
    • https://www.tctnanotech.com/wp-content/plugins/super-forms/uploads/php/files/df366060c40276a0c3434a87c2bafa85/72879508799.pdfIn PDF document text
    • https://zulapin.com/calisma2/files/uploads/xivifojizafolesiga.pdfIn PDF document text
    • https://greenturtleproductions.com.au/wp-content/plugins/super-forms/uploads/php/files/9d783ddc272b7b88ac7e78d5cbe45b35/talizi.pdfIn PDF document text
    • http://dohertylaw.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/46536672542.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=papyrus+pacifist+fightPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012175.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12175 10572 bytes
SHA-256: 316850f7cc9651028384c0a75cf841c12e17cd6e2c9902cb871c957d61fc1a2e
font_01_sfnt_off000139c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139C5 18812 bytes
SHA-256: 38abb9877ad9bbeaf19ce7791888512ddb393b347309343c62afbcca1bd7c1e3
font_02_sfnt_off000169d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x169D8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.