Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d0ff29b413130fd…

MALICIOUS

PDF

74.8 KB Created: 2021-02-14 12:15:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0f64cc4a134b7382aea094d3ee30c502 SHA-1: 21d80029cf2bcbdbd35ab66c3b6fc0f284703927 SHA-256: 3d0ff29b413130fd04e4fa72f9d4c9f533be742d9b6bcebdcef4b35480b1b32f
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://jacksth.ru/aws?utm_term=anthony+burgess+shakespeare+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4465705/normal_6015c5ab1b892.pdfIn PDF document text
    • http://consequences.space/7418638113926gh6.pdfIn PDF document text
    • https://joletumutete.weebly.com/uploads/1/3/4/8/134871701/8d215662b.pdfIn PDF document text
    • https://cdn.sqhk.co/nekuripafi/hagdTdy/greatest_hits_of_the_60s_youtube.pdfIn PDF document text
    • http://dayzcommunity.info/bakofifnbog.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475380/normal_60055593bc765.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424341/normal_601137b91e060.pdfIn PDF document text
    • https://xamezorunag.weebly.com/uploads/1/3/1/6/131606231/5510958.pdfIn PDF document text
    • https://cdn.sqhk.co/gukisafuw/fxijDN8/83811708687.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469852/normal_5fe65ede2cf9e.pdfIn PDF document text
    • https://cdn.sqhk.co/vagofedewat/aLVXjeC/perfect_barber_shop_hair_salon_games_2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381541/normal_6025de17890a5.pdfIn PDF document text
    • https://rafopotoze.weebly.com/uploads/1/3/4/6/134609035/03f0e816a.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/veledabejufi/mole_astrology_in_tamil_free.pdfIn PDF document text
    • https://s3.amazonaws.com/laradusa/muzuvejuxofipurodaw.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_off0000e857.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE857 5428 bytes
SHA-256: 8618f5bf28097970eb71f50ab24b1a8a1628fedc1033b40c9fcced1f1b5e801d
font_01_sfnt_off0000fad1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAD1 10520 bytes
SHA-256: 3e30240aa4777d868caffccf2c0ceb8a781582a8843877539ece0f295826adc1