Malicious PDF — malware analysis report

Static analysis result for SHA-256 eeec6cced879960e…

MALICIOUS

PDF

60.3 KB Created: 2020-06-03 21:52:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-07
MD5: 38c547b34b2c51b8c4bf84a9c3f49b37 SHA-1: 8a61af9506310d3af65d2d8158bb8ae8c1c0cde1 SHA-256: eeec6cced879960e4f20fcdb1588ba868bdd5fcd4388fa3d246539af137e4902
136 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

This PDF document contains a large number of external links, many of which point to other PDF files, suggesting a link farm or SEO abuse tactic. The document also explicitly mentions password protection for an archive, a common lure to bypass gateway security. The embedded URLs likely lead to further stages of the attack, possibly downloading additional malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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
  • 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://74-123-75-90.mgwnet.com/uploads/1/3/1/1/131164273/131164273.html#comptia+cybersecurity+analyst+%2528csa+study+guide+download PDF link annotation
    • http://findourfetishes.com/uploads/1/3/0/8/130873975/7755138.pdfIn PDF document text
    • http://hussbrand.com/uploads/1/3/1/4/131454316/ditanemifuporudevu.pdfIn PDF document text
    • http://wifiwv.club/uploads/1/3/0/2/130287997/jokefexe_duvitode_jakotu.pdfIn PDF document text
    • http://aliasprivateinvestigations.com/uploads/1/3/0/6/130620635/pujanop.pdfIn PDF document text
    • http://cierradmusic.com/uploads/1/3/0/5/130545753/dumixow.pdfIn PDF document text
    • http://ecosattvasangha.com/uploads/1/3/1/6/131637839/1926111.pdfIn PDF document text
    • http://camp-star.de/uploads/1/3/1/4/131452860/xozuxedunurirasa.pdfIn PDF document text
    • http://organiclifedayspa.com/uploads/1/3/0/3/130324236/wolirapowuzej-raseb-fakasok.pdfIn PDF document text
    • http://broadstreetbarkery.com/uploads/1/3/1/4/131408516/ruvanatawakej.pdfIn PDF document text
    • http://74-123-75-90.mgwnet.com/uploads/1/3/1/1/131164273/terms.htmlIn PDF document text
    • http://74-123-75-90.mgwnet.com/uploads/1/3/1/1/131164273/dmca.htmlIn PDF document text
    • http://74-123-75-90.mgwnet.com/uploads/1/3/1/1/131164273/policy.htmlIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://dojenus.files.wordpress.com/2020/05/nalirevasezipomuda.pdfIn PDF document text
    • https://bakovenorow.files.wordpress.com/2020/05/59376658948.pdfIn PDF document text
    • https://nefemeze.files.wordpress.com/2020/06/vawamazix.pdfIn PDF document text
    • https://xodugunoku.files.wordpress.com/2020/05/tixutemifuxuki.pdfIn PDF document text
    • https://mosufazu.files.wordpress.com/2020/06/96861821736.pdfIn PDF document text
    • https://fatoturomixo.files.wordpress.com/2020/06/polaxujosozelix.pdfIn PDF document text
    • https://kulovop.files.wordpress.com/2020/06/60914175721.pdfIn PDF document text
    • https://xekaviwaseti460218893.files.wordpress.com/2020/06/sigewanudaxavow.pdfIn 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
    • http://scripts.sil.org/OFLIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a78a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA78A 11636 bytes
SHA-256: 4b620e643fe45583c85a58ef7b713894e53eb17e12de344443984f79a1b0278d
font_01_sfnt_off0000ceda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEDA 16204 bytes
SHA-256: c988415812f594187b0a0ed75dc52802e798e1695b49bd300f8412a65040a449

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