Malicious PDF — malware analysis report

Static analysis result for SHA-256 32516d9248a47d0e…

MALICIOUS

PDF

75.7 KB Created: 2021-04-18 20:24:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 72ed8bc55a24bb4ccaaa8e1abd7327ef SHA-1: 70be2d41d285e0a3de6ae2d81166cbef0deac691 SHA-256: 32516d9248a47d0efec0fe368cf08e88c21e9c3319978f031662ea5a031ea426
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, a common tactic for SEO poisoning or phishing campaigns. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of generated links, and one specific URL is presented as a search result for 'Onkyo tx-nr709 no sound'. ClamAV also detected this as 'Pdf.Phishing.Trojan'. The embedded links suggest the primary goal is to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://lozipotod.ru/strik?utm_term=onkyo+tx-nr709+no+sound PDF link annotation
    • https://cdn.sqhk.co/xogutozo/gejjSa1/jafeguligu.pdfIn PDF document text
    • https://rerevuvoruta.weebly.com/uploads/1/3/2/6/132682210/bcd95635f6f75a.pdfIn PDF document text
    • http://mukinumatonewo.getenjoyment.net/44632450821.pdfIn PDF document text
    • https://fewadagagex.weebly.com/uploads/1/3/4/5/134594838/e22927b.pdfIn PDF document text
    • https://fatomokoke.weebly.com/uploads/1/3/4/0/134098041/guliluwiduroxopomi.pdfIn PDF document text
    • https://cdn.sqhk.co/bularalunop/ijchhMr/777-_200_crew_rest_area.pdfIn PDF document text
    • https://cdn.sqhk.co/janonaset/diip4ja/amazing_world_of_gumball_games_unblocked.pdfIn PDF document text
    • https://xunijududivajol.weebly.com/uploads/1/3/0/9/130969830/pazedaxi.pdfIn PDF document text
    • https://cdn.sqhk.co/zukasedu/zhjhdUP/real_racing_3_online_generator_activation_code.pdfIn PDF document text
    • https://cdn.sqhk.co/veludewozen/ihaia47/dog_tennis_ball_thrower_automatic.pdfIn PDF document text
    • https://cdn.sqhk.co/bevoletef/pichhhc/descargar_libro_escuela_de_negocios_en_gratis.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/belopudevuzuza/which_book_is_best_for_maths.pdfIn PDF document text
    • https://ad0d0dbb-669b-46a9-85df-79487014a0f3.filesusr.com/ugd/00d95d_ed1a1516c4cf4469ae2e1d8a8c54e46a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zubata/gibijepu.pdfIn PDF document text
    • https://s3.amazonaws.com/lorerexeg/1276436262.pdfIn PDF document text
    • https://c145ee04-3c3b-4786-8b94-e0511401b322.filesusr.com/ugd/de65f7_9a814c15dfea4c11acc70527265055d7.pdf?index=trueIn PDF document text
    • https://90e68d66-75cd-4f9f-aa76-03b1e6b67b4d.filesusr.com/ugd/324cd8_3cdb0adc81a84309b1d734883e2ed450.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tisegovofu/10571231785.pdfIn PDF document text
    • http://pajupevezujugut.atwebpages.com/5615617732.pdfIn PDF document text
    • https://183df7f2-4185-4ca0-bfcc-33b39bc842f1.filesusr.com/ugd/9ac34a_213bae1db069433385a8642f0f8ed548.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xulepiwa/gba_emulator_for_android_no_ads.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_off0000eae0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAE0 5248 bytes
SHA-256: cc2130d46b69e110074d5b30832da66828ea20c950537270ffbc589fb3b8a2bb
font_01_sfnt_off0000fce5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCE5 10856 bytes
SHA-256: fff6c7d076f886dd70566c07bbe5e47bfe61f137aa3a132c889278f207a9e63c

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