Malicious PDF — malware analysis report

Static analysis result for SHA-256 93370c65834edf83…

MALICIOUS

PDF

70.9 KB Created: 2021-02-12 17:21:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 41499f035df6a26cef72429900a4546c SHA-1: 7f79d757a849b4aaf43dda6a91d7c1851e0c6dc1 SHA-256: 93370c65834edf835b139db990a2f29c7edfb20d9550121c2b4ba1b35caab39a
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://bologen.ru/wb?keyword=metformin%20hcl%20side%20effects%20with%20alcohol PDF link annotation
    • https://cdn.sqhk.co/fepexeguma/Uic0hj0/40574088561.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502511/normal_5fd85d2e201a7.pdfIn PDF document text
    • http://fogozuvonuw.66ghz.com/diversity_3_trivia_branch_answers.pdfIn PDF document text
    • https://tesafugefiwa.weebly.com/uploads/1/3/5/3/135318727/legowovu.pdfIn PDF document text
    • https://cdn.sqhk.co/gotulurowav/hdjfH2h/cartoon_character_craft_ideas.pdfIn PDF document text
    • https://bajarewejewud.weebly.com/uploads/1/3/4/6/134673735/d0a4a.pdfIn PDF document text
    • https://vorexumezekadan.weebly.com/uploads/1/3/0/9/130969740/aaaad108f19.pdfIn PDF document text
    • https://migobagola.weebly.com/uploads/1/3/4/8/134874333/432c57b36e5ced0.pdfIn PDF document text
    • https://cdn.sqhk.co/nomitusibop/idhdimb/underhanded_comment_examples.pdfIn PDF document text
    • https://tisalupiruj.weebly.com/uploads/1/3/4/0/134018152/6166431.pdfIn PDF document text
    • https://cdn.sqhk.co/lojulifuvuxu/ojbkkic/nintendo_retro_system_games_list.pdfIn PDF document text
    • http://tipatav.22web.org/59587300840.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xupevovegizem.rf.gd/picsart_premium_apk_apkpure.pdfIn PDF document text
    • http://karapazixegipi.epizy.com/esl_worksheet_games.pdfIn PDF document text
    • http://gusalixofunek.epizy.com/18082615388.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_off0000d8eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8EB 5360 bytes
SHA-256: 321e1a651bbe5066956f87553aaaf923a4d9d84aff4748eab4b3ae40539bb983
font_01_sfnt_off0000eb18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB18 10576 bytes
SHA-256: e57e223f368769456b6c3ed8f098c3e4958f34313e485b82206f112fc2426f07