Malicious PDF — malware analysis report

Static analysis result for SHA-256 69ed58a9534c3a2d…

MALICIOUS

PDF

87.1 KB Created: 2021-06-29 08:09:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 2a4f22b2db5c1020eb2f377102ef0575 SHA-1: 479789692eefc76f20de9fac3142cbb19698be09 SHA-256: 69ed58a9534c3a2dcc5bd33d1a220196c0f9ffe07a11e48c7f2720f100de50d5
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to compromised CMS uploads and disposable hosting, suggesting a link farm designed to distribute malicious content. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic indicates the document likely instructs the user to download an archive, providing a password to bypass security scanning. While no scripts were directly extracted, the PDF structure and link farm behavior are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.
  • 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 http://gtlitalia.com/userfiles/files/dijurilike.pdf
    • http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a91652965b4---44080148589.pdf
    • https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/3234714fa59643f4261e9bccf7513e11/munafeza.pdf
    • https://mangonebike.com/uploads/file/tuvatotesobiwo.pdf
    • http://mu-rrrc.com/userfiles/file/savidatanopufinijovenak.pdf
    • http://www.dj-csnl.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607a25c42e3b3---2193339253.pdf
    • http://ucinnovation.ru/admin/ckfinder/userfiles/files/wijedixujef.pdf
    • https://www.edutechusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c43e1fbae4a---13829704816.pdf
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092633d04740---70858632405.pdf
    • http://stressmanagement-karriere.de/userfiles/file/kigemaxepejelozoxaxi.pdf
    • http://wirheiraten.de/images/file/jatowoxivixarawewov.pdf
    • https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/a7e2a6856f614ee27403d91555f5d27a/divodufutakonebelase.pdf
    • http://volamtuyetthe.com/userfiles/file/95153457998.pdf
    • http://atreve.eu/ubezpiecz/obrazy/file/majugu.pdf
    • http://buddhavehicle.com/userfiles/file/sinuj.pdf
    • http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/160a24cbbaba9e---67939053461.pdf
    • https://bawwabatrizq.com/userfiles/file/jakibaxesekufanivonom.pdf
    • http://sshs61.com/clients/6/60/60e739d5a8cf4a6710e4f064fd99417d/File/62092493026.pdf
    • http://xn--80age2amlc.xn--80adxhks/pics/images/file/zowibetofatibidodo.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089242579ea2---97904611929.pdf
    • https://baoholaodong24.com/userfiles/file/52414520538.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=roger+waters+the+wall+2014+torrent
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e30b.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xE30B 16792 bytes
font_01_sfnt_off0000fb1d.bin
a9791bed4bb5843c3c757dc89df0164ed9f64617cd77d09538ea55123c5b036c
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB1D 23920 bytes
font_02_sfnt_off0001347f.bin
4566b41a97e4f1c077c977f00d7da3d21566e4458bfbc1363aaaba5c3d1d3c74
pdf-font-stream PDF embedded font (sfnt) at offset 0x1347F 10800 bytes