Malicious PDF — malware analysis report

Static analysis result for SHA-256 25cce08a4f6c68c9…

MALICIOUS

PDF

71.0 KB Created: 2021-02-16 11:54:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 87b5c72d3d4007e066f72e2cf0dc2351 SHA-1: ef5ea02a68efb854a29bb0a508b33856252839ec SHA-256: 25cce08a4f6c68c984a6a589aab330a57a946e8bb2519f9c6549cae57290dd4b
116 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains a large number of external links, many pointing to potentially malicious domains, suggesting a link farm or phishing lure. The 'SE_CALLBACK_LURE' heuristic indicates the document may prompt users to call a number for fraudulent purposes. While no scripts were explicitly extracted, the PDF structure and extensive external links suggest it's designed to redirect users to malicious content or facilitate a scam.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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) 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://maypoin.ru/wb?keyword=zte%20z557bl%20tracfone%20unlock PDF link annotation
    • https://tiwirekofer.weebly.com/uploads/1/3/5/3/135314588/kujixi-fanibudemeva-wowetu-ketumumuv.pdfIn PDF document text
    • https://xikuvisaduwobax.weebly.com/uploads/1/3/5/9/135962120/8256372.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412900/normal_5fec76c9220a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372358/normal_60135ebbee6d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374848/normal_601786a32a079.pdfIn PDF document text
    • https://buzegiregusa.weebly.com/uploads/1/3/6/0/136082094/moxokodirajexine.pdfIn PDF document text
    • https://duguzimelape.weebly.com/uploads/1/3/4/6/134666192/zajixuledufenu.pdfIn PDF document text
    • http://wowitaly.space/60953697612wcl9d.pdfIn PDF document text
    • https://gajatizu.weebly.com/uploads/1/3/5/3/135315297/menivagojedugavi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372074/normal_5ff435a271d22.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424025/normal_5fec9f3d709cd.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/jujadodedaruxix/aladdin_2019_movie_songs_pagalworld.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/the_quantum_astrologer_s_handbook.pdfIn PDF document text
    • https://s3.amazonaws.com/tozaduliwubega/suxavenituwu.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/chevrolet_cruze_2011_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/sinamuguf.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/grammarway_3_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/katun_whatsapp_status_video.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_off0000d8fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8FC 5112 bytes
SHA-256: 2e91712aaa0db5a1d3e3cbb0a7d1d19f5090ef2e5383026c70a210de77c3e3e7
font_01_sfnt_off0000ea8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA8E 10848 bytes
SHA-256: 99f0ead7b68fb5fccfc038cc66e3e37c87958408e42f38fdc2090ac6b7f34769

Open this report in the interactive analyzer, or submit your own file for analysis.