Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ab06deaa63d75c0…

MALICIOUS

PDF

70.7 KB Created: 2021-02-10 20:15:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b2a68f760afccd669555cab222c4cf35 SHA-1: 4c6f1465266df8532082b951f6d7d9850edd7ccf SHA-256: 7ab06deaa63d75c0507e7ec787be5c5674c8120142326d6a713b6c812e6f72f9
244 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://yafferge.ru/aws?utm_term=adobe+reader+pdf+free++windows+8.+1 In PDF document text
    • https://cdn.sqhk.co/fusojafiza/NpiiZig/piwivomewavumosotab.pdfIn PDF document text
    • http://sesalon.xyz/free_menu_design_templates_photoshop1rmr0.pdfIn PDF document text
    • http://idealica-uficialeitalia.website/63873041492l03jt.pdfIn PDF document text
    • http://winoorama.site/levey_jennings_report5v3iu.pdfIn PDF document text
    • https://cdn.sqhk.co/muluxodipoto/hgguyKU/find_my_phone_android_oppo.pdfIn PDF document text
    • https://cdn.sqhk.co/dowusutitozi/ijanId7/kosotodokezikikabivajopa.pdfIn PDF document text
    • http://atlas-copco.su/69485267477dt2s5.pdfIn PDF document text
    • https://dobetabuzaduguz.weebly.com/uploads/1/3/5/3/135312815/zuvimuxuwad-safunajofunami.pdfIn PDF document text
    • https://cdn.sqhk.co/sebutarukaw/ieqkgjr/58299450602.pdfIn PDF document text
    • http://cmbespaceclient.xyz/critical_ops_full_game_for_androidrkxsv.pdfIn PDF document text
    • http://obschee.xyz/rileradufedorosulefagoxb0srh.pdfIn PDF document text
    • https://kilejotiwig.weebly.com/uploads/1/3/1/4/131406519/buniganutizavox-sumefut.pdfIn PDF document text
    • https://zabaparadasikid.weebly.com/uploads/1/3/4/3/134317604/nurukamar-tutumumenubupap-xaduxu.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/regegozumekoza/random_video_chat_app_free.pdfIn PDF document text
    • https://s3.amazonaws.com/mikibetiv/begokosetidap.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_off0000cb21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB21 5500 bytes
SHA-256: 67d110b884c84fa0ec957a44e65bbd945a8f00357c3436441046b20a65c730c5
font_01_sfnt_off0000ddfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDFB 14948 bytes
SHA-256: add8d6ab1e45c89bad4db1251b39db3c41eca37128c98479f46c0e4d48123b49

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