Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2756189d83ed8c2…

MALICIOUS

PDF

79.6 KB Created: 2021-09-20 01:01:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: cf807d4e5ea131121bf1dc2f8c69d879 SHA-1: d72bcb1692c6b98d7132ba0baf5444eea9ee390b SHA-256: d2756189d83ed8c24019ecd33577c156bd530576e14ebbd8a601a079c422b00e
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links to external resources, many of which are hosted on compromised WordPress sites or disposable domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or trojan distribution. No scripts were extracted, but the PDF structure itself facilitates the attack by hosting links to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://www.rosabrockenhaus.ch/ckfinder/userfiles/files/komevisuzalaxeb.pdf In PDF document text
    • http://hocomesun.com/upload/53218438311.pdfIn PDF document text
    • http://140.121.180.103/ckfinder/userfiles/files/59759047168.pdfPDF link annotation
    • http://thoitrangvabaoho.com/Images_upload/files/92408465423.pdfIn PDF document text
    • http://wcsps.com.tw/ckfinder/userfiles/files/sewabux.pdfIn PDF document text
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134ec3877cff---kitizowo.pdfIn PDF document text
    • https://desertflying.club/wp-content/plugins/formcraft/file-upload/server/content/files/1613782654b48f---8031275318.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/161305852e6d61---petel.pdfIn PDF document text
    • http://lorofilmes.com/Uploads/ckfinder/userfiles/files/levobedasoxarufowi.pdfIn PDF document text
    • http://cieplej.pl/imgturysta/file/dalorinotolusosa.pdfIn PDF document text
    • http://ozhelalikram.de/resimler/files/zepopubirawe.pdfIn PDF document text
    • http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16142208855169---71177563626.pdfIn PDF document text
    • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614609ffe5bd6---fasegaxoxurepo.pdfIn PDF document text
    • http://www.bc-arman.kz/ckfinder/userfiles/files/75030427871.pdfIn PDF document text
    • http://optikametuje.cz/userfiles/file/58515117769.pdfIn PDF document text
    • https://livstyle.ro/home/livstyle/public_html/uploads/files/feragafanogukusatewol.pdfIn PDF document text
    • https://metrosecuritynepal.com/assets/userfiles/files/73352391670.pdfIn PDF document text
    • https://posetili.ru/userfiles/file/72288817501.pdfIn PDF document text
    • http://veronikavilla.hu/userfiles/file/26409192945.pdfIn PDF document text
    • http://pharmorgsyn.com/upload/files/bevev.pdfIn PDF document text
    • https://qian-ho.com/upfiles/editor/files/61624585681.pdfIn PDF document text
    • http://shinserviceodi.ru/wp-content/plugins/super-forms/uploads/php/files/8b134cd6bd1c2385e716d6cf887adf72/juwukuvof.pdfIn PDF document text
    • http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16142cd42a722e---xuxivalogepo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=spiral+full+movie+online+freePDF 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_off0000d5d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5D6 17304 bytes
SHA-256: 216deef329825b37a6b160a6d56e152f5be8399d758bb2ce60e618260c44b434
font_01_sfnt_off00010214.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10214 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011a2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A2B 10492 bytes
SHA-256: e6320b92f5373d7ba60a26b41b6069b997b06effe71f2560068f4ce816a4ac11

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