Malicious PDF — malware analysis report

Static analysis result for SHA-256 b62162225a5e77db…

MALICIOUS

PDF

81.0 KB Created: 2021-01-24 22:08:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 37e89aabbd68572bbcbddbe9708dc354 SHA-1: 0d0496d79509f6c46cedcdc871fda05d4bf3dd4a SHA-256: b62162225a5e77db05490753d62279cf65d447ed6e31599ec8be2444bf9523d3
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://jacksth.ru/wb?keyword=programming%20languages%20ranking%202019%20github PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4370092/normal_60013612cf8d3.pdfIn PDF document text
    • http://mkr-olimp.info/cialdini_influence_the_psychology_of_persuasion_summaryvilci.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445736/normal_5fd9a10f37133.pdfIn PDF document text
    • https://cdn.sqhk.co/roweziwamu/hahfmjd/street_racing_traffic_speed_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/bozawenibiwa/diijbib/83365962859.pdfIn PDF document text
    • https://cdn.sqhk.co/mekaxosur/hviijgK/lagalomiletoliziruse.pdfIn PDF document text
    • https://cdn.sqhk.co/netimawifes/giRjct4/ice_hockey_goalie_equipment_cost.pdfIn PDF document text
    • http://tgesheff.xyz/karawajakejulsnjp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375889/normal_6000a6e4e27e6.pdfIn PDF document text
    • http://indohealth365.online/30787334188eo24m.pdfIn PDF document text
    • https://xidujodoj.weebly.com/uploads/1/3/1/0/131071067/vapovosemixag.pdfIn PDF document text
    • https://folutiniku.weebly.com/uploads/1/3/1/8/131871586/7da38b2108.pdfIn PDF document text
    • https://cdn.sqhk.co/tefulobesa/6xIxPt0/fighter_jet_air_racing.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421612/normal_5ffacc2438b29.pdfIn PDF document text
    • http://genusadnlo.space/hachiman_smite_sourcetuu2c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000f8d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8D9 5784 bytes
SHA-256: e104065a460178bc77f760e540f77de6a108cbba7156b1414146613089e48538
font_01_sfnt_off00010c5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C5A 13016 bytes
SHA-256: 575d588b01f6783915bbdc02055dcbb653d3e10a819b2745b9572ea139b2ff89