Malicious PDF — malware analysis report

Static analysis result for SHA-256 26fc0b75f2dd5334…

MALICIOUS

PDF

38.6 KB Created: 2020-03-14 22:15:43 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 13664f1118233703a3b2c86a6592d30b SHA-1: f665995724dbdabdbcd0d461655d0354d70220bd SHA-256: 26fc0b75f2dd53341f9d8c8ac4bf380e5d338fc282ba0c64896726ea0705527e
116 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to other PDF files hosted on similar domains. This behavior is indicative of a link farm or SEO scam designed to artificially inflate search engine rankings or distribute malicious content. The heuristic 'PDF_SEO_LINK_FARM' strongly supports this assessment, identifying a mass of external PDF links. The presence of a callback phishing lure suggests a potential secondary objective of social engineering users.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://discovermyrootstravel.voyagerwebsites.com/uploads/1/3/0/9/130969496/130969496.html#cutting+edge+books+free PDF link annotation
    • http://cr-routines.com/uploads/1/3/0/7/130775032/lufonorixu.pdfIn PDF document text
    • http://www.cozyasatoast.com/uploads/1/3/0/6/130621095/a4374be.pdfIn PDF document text
    • http://bookmakers.online/uploads/1/3/0/6/130620228/b9a961c3e534a.pdfIn PDF document text
    • http://upkeephomemaintenance.com/uploads/1/3/0/5/130544938/besowimup.pdfIn PDF document text
    • http://treper.se/uploads/1/3/0/6/130604580/a73beeea30f5c.pdfIn PDF document text
    • http://baumanbaps.com/uploads/1/3/0/3/130313196/4619244.pdfIn PDF document text
    • http://bpcleaningservices.com/uploads/1/3/0/4/130493714/7986319.pdfIn PDF document text
    • http://lilacsforchange.com/uploads/1/3/0/4/130435956/3e96befb6a87.pdfIn PDF document text
    • http://hostmaster.pamcoxpaintings.co.uk/uploads/1/3/0/3/130312925/bimakokilekojag_loxusiwowodu_goses_pujif.pdfIn PDF document text
    • http://freemaven.net/uploads/1/3/0/5/130550998/golumivibotod-gitaze-denavagele-sudifuloso.pdfIn PDF document text
    • http://www.flhcevents.com/uploads/1/3/1/0/131071312/9bcefd5638276da.pdfIn PDF document text
    • http://mail.aitheriaelaia.com/uploads/1/3/0/2/130289246/radegubigimi.pdfIn PDF document text
    • http://eleadsteams.com/uploads/1/3/0/7/130739968/7074961.pdfIn PDF document text
    • http://www.vuittonmi.com/uploads/1/3/0/8/130874480/dilef.pdfIn PDF document text
    • http://hautestew.com/uploads/1/3/0/5/130544635/xibevelenebuxaxom.pdfIn PDF document text
    • http://jasonshadowen.com/uploads/1/3/0/5/130589180/5c890d69.pdfIn PDF document text
    • http://mail.reflexgames.net.au/uploads/1/3/0/6/130639436/domuz-felizigoza.pdfIn PDF document text
    • http://raisingamazingnation.org/uploads/1/3/0/8/130814623/8657344.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

Related samples 1

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD9 8212 bytes
SHA-256: 7b66ee996bf2f9c32583894efcee03f8facbd2effc5eadd7e31861718ed6c355

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