Malicious PDF — malware analysis report

Static analysis result for SHA-256 def8a72e9cf9ed93…

MALICIOUS

PDF

70.9 KB Created: 2021-03-02 08:53:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c0210d0847fadc8cb47e2b6f4b414c5d SHA-1: 8430764e456c588d6e227a8434a0e4f67888dd3f SHA-256: def8a72e9cf9ed9392d7a5bc3fc4e08fe7b275b9bf9bf89d9311e44ff838a935
186 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.
  • 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.
  • 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://gimoguvi.ru/wix?keyword=skyrim+tower+stone+location PDF link annotation
    • https://tipuzinugex.weebly.com/uploads/1/3/2/6/132682040/9011643.pdfIn PDF document text
    • http://gakawisogafuga.mygamesonline.org/honda_harmony_1011_riding_mower_for_sale.pdfIn PDF document text
    • http://excellent-spb.ru/31387334368wenvm.pdfIn PDF document text
    • https://tataberoxem.weebly.com/uploads/1/3/0/8/130874397/5721322.pdfIn PDF document text
    • https://xexemisekugo.weebly.com/uploads/1/3/4/6/134679242/2318121.pdfIn PDF document text
    • http://startbastar.online/how_starbucks_saved_my_life_quizletehhnf.pdfIn PDF document text
    • https://fiwozipuwawew.weebly.com/uploads/1/3/0/8/130814157/5972587.pdfIn PDF document text
    • https://serutoposax.weebly.com/uploads/1/3/5/3/135398922/widogo-pimepekezu-kexajunuvujiguw.pdfIn PDF document text
    • https://fevokixesebu.weebly.com/uploads/1/3/0/7/130776230/joveka.pdfIn PDF document text
    • http://stebsmeh.space/xigunahfs9w.pdfIn PDF document text
    • https://koxawikala.weebly.com/uploads/1/3/4/6/134643159/sipuvifapugibe.pdfIn PDF document text
    • http://extrameets.fun/59667635867pwfe.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/bidemewufa/here_i_go_again_drum_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/66165864840.pdfIn PDF document text
    • https://s3.amazonaws.com/daniwodug/is_kaido_the_strongest_yonko.pdfIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/stock_market_live_today_yahoo.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_off0000d9c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C0 5304 bytes
SHA-256: a7ab76d10283687c179f9d2365bb928e1cf9588674a35e684d0c31e101915f77
font_01_sfnt_off0000ebcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBCF 10036 bytes
SHA-256: 25263b6714981b244330fa9b6b5cc2e8027ceea119696b9e79b15aabb203237f