Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ee436f1fccfccfd…

MALICIOUS

PDF

50.1 KB Created: 2020-11-08 22:38:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 59c148d50ccbe29609ff661682fba537 SHA-1: 5789cf40ea888073ada13ec83d1ddb07e9131df8 SHA-256: 3ee436f1fccfccfd2fa03d05beb56b81b182e0bcd24ffb217c325a3d0e2e60b1
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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 https://traffset.ru/wb?keyword=draenor%20engineering%20leveling%20guide PDF link annotation
    • https://dowezepuxaku.weebly.com/uploads/1/3/4/4/134463959/6056996.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365599/normal_5f8f4dc9c71e2.pdfIn PDF document text
    • https://migufakugiguxob.weebly.com/uploads/1/3/4/5/134579218/vetera_tekevid_detideti.pdfIn PDF document text
    • https://nukafezika.weebly.com/uploads/1/3/4/5/134510633/gegokozutuxagaxunos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365635/normal_5f8f4369f1b2e.pdfIn PDF document text
    • https://vewutaniwem.weebly.com/uploads/1/3/0/8/130873717/c9ee3d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366317/normal_5f8886092d0fd.pdfIn PDF document text
    • https://fogakorix.weebly.com/uploads/1/3/3/9/133997140/5173bd920e.pdfIn PDF document text
    • https://wivupenoremew.weebly.com/uploads/1/3/0/7/130775018/dikud.pdfIn PDF document text
    • https://zewubonorow.weebly.com/uploads/1/3/1/3/131398185/sabok-guwadokekul-wagivomi-fosutogo.pdfIn PDF document text
    • https://xogaketur.weebly.com/uploads/1/3/4/5/134593565/570dd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kigavanus/bharat_acharya_coa.pdfIn PDF document text
    • https://s3.amazonaws.com/kepevipawit/fisasif.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/blart_side_of_the_mall_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/zarusegibitumet/noun_verb_adjective_adverb.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/69625247708.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000868a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x868A 4876 bytes
SHA-256: 0f4d510257d0822f3c509e0d1ec3671444f909da61de9aa538087a39eb466d50
font_01_sfnt_off00009735.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9735 10716 bytes
SHA-256: 3daad0f8d557c5bf7006e9fa4eeae39019542954f1df8a2957c797b76ef75f12

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