Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a6fdf9a9a4c560e…

MALICIOUS

PDF

91.7 KB Created: 2021-03-17 15:02:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 606665cf12f82e16473474761ad2c162 SHA-1: 94839495b2b8d48c6894e6eef21b8474898a9214 SHA-256: 2a6fdf9a9a4c560e7db9b5b6af29be8a6caf425ddf973af054f1ae883919aa49
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://mezovuduw.ru/aws?utm_term=what+are+the+3+branches+of+government+when+can+they+interfere+each+other PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4427085/normal_6017066f5233b.pdfIn PDF document text
    • https://cdn.sqhk.co/jasurisunav/kgi8bMR/muwugowanajoda.pdfIn PDF document text
    • https://cdn.sqhk.co/felodunom/INsjhig/fast_food_restaurants_near_usc.pdfIn PDF document text
    • https://cdn.sqhk.co/setinapas/jdjehiS/gifosenabujirumolud.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490001/normal_5ff7b045c717c.pdfIn PDF document text
    • https://cdn.sqhk.co/puwidebudojo/jfhhCyI/56099729960.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378406/normal_5febb5179d726.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379219/normal_5fe5461f6ae77.pdfIn PDF document text
    • https://cdn.sqhk.co/wizevomorofe/jgC97ig/66365983175.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417418/normal_5fed1809f2038.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/zesotat/can_you_share_a_post_with_just_1_person_on_facebook.pdfIn PDF document text
    • https://efa91360-7c21-416c-9d60-3189e0beb381.filesusr.com/ugd/42ffc7_b9c48c99f9f7450baa767afa2f2c3958.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf249efd-c5ba-49ab-bd92-c0e30b581aed/skyrc_imax_b6ac_v2_dual_power.pdfIn PDF document text
    • https://s3.amazonaws.com/vobuturinivi/agribusiness_management_notes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a541ff6-aa49-4426-a874-3b28a84001f7/persepolis_2_online_book.pdfIn PDF document text
    • https://38f9ccf9-db33-4582-994d-0ea518e52d38.filesusr.com/ugd/368de4_da20e24d6f2b4a69bc46446d8fa0d165.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/ielts_fever_listening_test_15_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/xomepixo/warhammer_stormcast_eternals.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_off000124f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124F5 5832 bytes
SHA-256: f2347df35692e980be70d66ad8cd2faff35d8c53cde2ca9aace2bdd9404ddc11
font_01_sfnt_off000138d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138D0 11272 bytes
SHA-256: fd647563775ce1fb35acb8be1ababa4fe02ab9e4e16179a25227c0c2ec6c6cae

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