Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1fa9b5ce472dea1…

MALICIOUS

PDF

75.7 KB Created: 2021-02-23 11:56:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 025c95236ac631fdfbd06e9be63d58c1 SHA-1: cac6cb1eaa3b0103d0f994515116963e9899b0f5 SHA-256: c1fa9b5ce472dea1e250300d855b2713009034d44362da13b89c1794744b207f
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://druttle.ru/wix?keyword=how+to+open+tax+file+number+in+australia PDF link annotation
    • https://cdn.sqhk.co/piwizogir/tlHJid5/telemedicine_jobs_florida.pdfIn PDF document text
    • http://jenogoz.22web.org/holden_barina_2007_manual.pdfIn PDF document text
    • http://penaxuwilamufo.iblogger.org/vidubipalowu.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxozowaki/asjggfV/98886968790.pdfIn PDF document text
    • https://mebemawadaj.weebly.com/uploads/1/3/5/2/135295691/waxawiri.pdfIn PDF document text
    • https://cdn.sqhk.co/fagaxirupunu/hjaicje/get_free_gems_monster_legends.pdfIn PDF document text
    • https://tuwebuliwarukor.weebly.com/uploads/1/3/5/4/135400964/rerafelexamed_tinunipenaj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386086/normal_5ff0b6a0b7f81.pdfIn PDF document text
    • https://cdn.sqhk.co/juzosugun/jHhe2ig/pelawer.pdfIn PDF document text
    • http://takodevizol.iblogger.org/live_stream_sports_apk.pdfIn PDF document text
    • https://kafaziwe.weebly.com/uploads/1/3/1/0/131070109/b330d2be7a.pdfIn PDF document text
    • http://papotupeti.iblogger.org/85691883675.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418985/normal_5fe03dfa9127b.pdfIn PDF document text
    • https://kimewazokedusa.weebly.com/uploads/1/3/1/4/131454536/5e3f56f78eb4b.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/mukut/phrasal_verbs_con_get.pdfIn PDF document text
    • https://s3.amazonaws.com/xovekolamoxe/rorupogikozuwebixi.pdfIn PDF document text
    • https://s3.amazonaws.com/fomaralunex/ariston_oven_manual_book.pdfIn PDF document text
    • http://bokapobutiz.rf.gd/cara_airshou_di_iphone_5.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_off0000ebed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBED 5308 bytes
SHA-256: 03bd597255421282e39e592f695903141996280d5726854d16e9130e6433a8b7
font_01_sfnt_off0000fdf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDF7 10412 bytes
SHA-256: 0fd4e2344eadff3076786505ccb3c6622811c4abe92d44743a736c0bf03fd2d4

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