Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d0434c0a838e3e4…

MALICIOUS

PDF

37.8 KB Created: 2020-04-11 06:10:24 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 7f8c84f55d9973d1c3cd041084a661fe SHA-1: 01f69a59032ceec3223915a30009419c5ef6bc53 SHA-256: 9d0434c0a838e3e4bbd567568d70147ce956ad31f188f7ebf1cb235d03970ef7
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a significant number of external links to various domains, indicating a link farm or SEO spamming operation. The embedded URLs point to numerous PDF files hosted on these domains, suggesting a coordinated effort to drive traffic or distribute content through these seemingly unrelated sites. The presence of a Minecraft-related string in the document body, combined with the link farm, suggests a potential lure for users interested in such content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://cpanel.ladse.org/uploads/1/3/1/0/131069824/131069824.html#minecraft+14.0+android+oyun+club+ind PDF link annotation
    • http://placsports.us/uploads/1/3/1/4/131437100/tigadunugot_demajita_vojapo_fatot.pdfIn PDF document text
    • http://relaxationgiftbasket.com/uploads/1/3/0/7/130739164/dukakozizilixo_rotagum_kuvuvafuxami_kuwavaja.pdfIn PDF document text
    • http://hooplajewels.org/uploads/1/3/0/2/130272389/5247925.pdfIn PDF document text
    • http://bodysoulcomplementarytherapies.com/uploads/1/3/0/7/130776591/93aa59ff3.pdfIn PDF document text
    • http://ablowe.com/uploads/1/3/1/3/131382320/ripurisiruf-ragogitev-pokirarepotopi-tixibixakak.pdfIn PDF document text
    • http://apecsenye.com/uploads/1/3/0/6/130621533/854811.pdfIn PDF document text
    • http://hichamhabchi.com/uploads/1/3/0/8/130874284/1f998bb.pdfIn PDF document text
    • http://celebratingourseniors.net/uploads/1/3/0/5/130588257/2758243.pdfIn PDF document text
    • http://esacindy.net/uploads/1/3/0/6/130603954/1117559.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • 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
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E03 9468 bytes
SHA-256: 8a8a4896b8cf36f15f4616050b8bf0c425b7e009bfb944aafb195232f7425bea
font_01_sfnt_off00007fbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FBE 2636 bytes
SHA-256: 171afb6bedcc13279c3ef12f27b89408156d7ab43f0646bcc70c5474be0cb90a