Malicious PDF — malware analysis report

Static analysis result for SHA-256 e158e3aaebbdb04d…

MALICIOUS

PDF

48.0 KB Created: 2020-03-29 12:09:26 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-04
MD5: 3da9fbcd1644ac2029a0632ebc44a123 SHA-1: a9aa533c05970246a19fada008bce5e46f11d861 SHA-256: e158e3aaebbdb04df8aafd1b6fcbe9c7d4dd937707812d9fc35a2831b05d4d17
96 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are numerically or generically named, suggesting a link farm or SEO spam operation. The document body, though partially corrupted, contains keywords related to recipes and application metadata, likely used to disguise the malicious intent. The primary goal appears to be directing users to a network of websites, potentially for advertising, phishing, or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://blockchainambassador.ca/uploads/1/3/0/2/130289481/130289481.html#gluten+free+vegan+cake+recipe+uk PDF link annotation
    • http://rfnflanges.com/uploads/1/3/0/8/130814085/pefajofak.pdfIn PDF document text
    • http://earthquakesafety101.com/uploads/1/3/0/5/130543539/dd324bfb.pdfIn PDF document text
    • http://stephanieboivin.com/uploads/1/3/0/6/130639093/rezewatonutora-mudevesowekin-femibibi-mofefagibuzi.pdfIn PDF document text
    • http://ketooozy.com/uploads/1/3/0/2/130273735/xiwalagen-mevijamifez.pdfIn PDF document text
    • http://kobiphysique.com/uploads/1/3/0/7/130739206/2050299.pdfIn PDF document text
    • http://bystacywithlove.com/uploads/1/3/0/4/130483355/893cfd2270e25.pdfIn PDF document text
    • http://sonoranshadows.com/uploads/1/3/0/7/130776589/vulubudibafif-nasufizewifom-nixeki-firapi.pdfIn PDF document text
    • http://sundancertradingco.com/uploads/1/3/0/7/130739121/5459104.pdfIn PDF document text
    • http://biohaircarethailand.com/uploads/1/3/0/4/130488704/8b3c9e5bf7f.pdfIn PDF document text
    • http://cellularculture.com/uploads/1/3/0/4/130478551/vadokuvawofoj-vokuxigexo.pdfIn PDF document text
    • http://cardonfamily.org/uploads/1/3/0/7/130775033/8f33c.pdfIn PDF document text
    • http://compratucasaya.com/uploads/1/3/0/4/130435532/8864452.pdfIn PDF document text
    • http://mathematics-inquiry.com/uploads/1/3/0/7/130776629/751786.pdfIn PDF document text
    • http://whereiskathryn.com/uploads/1/3/0/4/130488547/4672243.pdfIn PDF document text
    • http://gearheadtackle.com/uploads/1/3/0/6/130621781/5666417.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_off00007476.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7476 7944 bytes
SHA-256: 63b524ce6166c9da4d20ce0cf9cf35a186f0041d9b630c05866552db236c838a
font_01_sfnt_off0000936a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x936A 2604 bytes
SHA-256: 83d89f79375f7f339e88070a8779324ce221c94923bff415e388e162fbc46cfe
font_02_sfnt_off00009c9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C9D 16140 bytes
SHA-256: 0f23141ba94d37b49c53016ac63a9b008a6ac8e4c4656a8d80e6725f77750189

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