Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf20b4c623fa7494…

MALICIOUS

PDF

64.7 KB Created: 2020-04-10 23:11:50 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-09
MD5: ff2e9c0784c9718efccf9237a0afdf05 SHA-1: 1dae5493df9ac7da15d342565414cf2f8c6d70ce SHA-256: cf20b4c623fa7494482c744d92f44481aaa721f00e0197774e17388784d8d784
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a large number of external links, a technique often used in SEO spam or phishing campaigns to drive traffic to malicious sites. The document body mentions 'Seagull cbt answers android', suggesting a lure for users searching for specific information. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, with 'http://insureappleipod.com/' being a dominant host. The presence of numerous PDF links suggests a link farm designed to manipulate search engine results or redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9933

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://iweargreatness.com/uploads/1/3/0/6/130604939/130604939.html#seagull+cbt+answers+android PDF link annotation
    • http://insureappleipod.com/uploads/1/3/0/7/130775859/vabedape.pdfIn PDF document text
    • http://prostretchmassagetherapy.com/uploads/1/3/0/5/130551880/netagomap_zojofefe_dejubejududo_lapeduga.pdfIn PDF document text
    • http://alpinepro2000.com/uploads/1/3/0/4/130436339/d6dcc7.pdfIn PDF document text
    • http://ascenthawaii.net/uploads/1/3/0/9/130969858/noxixatidudiwe.pdfIn PDF document text
    • http://maggiemayweb.com/uploads/1/3/1/4/131409498/gamowenof_newabowog_masax.pdfIn PDF document text
    • http://hdigriffin.com/uploads/1/3/1/0/131070298/1052240.pdfIn PDF document text
    • http://missinglinkss.com/uploads/1/3/1/4/131438847/marepopixeja.pdfIn PDF document text
    • http://specialtygifts2go.com/uploads/1/3/0/5/130543684/a11da9618f.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a760.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA760 14832 bytes
SHA-256: eadfb3e4ff92b50b9315145ad893d7de7014ee53fc40280df09c6878eefea4e9
font_01_sfnt_off0000d658.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD658 2652 bytes
SHA-256: e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea
font_02_sfnt_off0000dfc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFC1 16096 bytes
SHA-256: 871f34b8148276e59303be3b209f4b6ecbcd5d18358d3e2eb4ce9c8d9b400459

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