Malicious PDF — malware analysis report

Static analysis result for SHA-256 caa01e86ea95e572…

MALICIOUS

PDF

71.5 KB Created: 2021-02-16 11:38:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: ed328eaeca2d51f8a24009a770fd466d SHA-1: c9fd31b00ac0887556e8bca1012897509ace6637 SHA-256: caa01e86ea95e572734e4eeaacbafa6499aaa424a8d694d349f86e21f60d377b
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/wix?keyword=concentration+of+ions+in+solution+worksheet PDF link annotation
    • https://pejupatuwotim.weebly.com/uploads/1/3/2/8/132814375/vigit-fovudow-luxuv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373782/normal_5fc8a9be4fda0.pdfIn PDF document text
    • https://kekufakaxuw.weebly.com/uploads/1/3/2/7/132740700/53862c0919e.pdfIn PDF document text
    • http://lifeshop.pro/mepifax3fe2p.pdfIn PDF document text
    • https://xupusunozad.weebly.com/uploads/1/3/1/0/131070799/038df.pdfIn PDF document text
    • https://wegakerovosa.weebly.com/uploads/1/3/0/8/130873826/8360707.pdfIn PDF document text
    • https://kefuvavubuxega.weebly.com/uploads/1/3/1/1/131164002/9487351.pdfIn PDF document text
    • https://zopupafi.weebly.com/uploads/1/3/1/4/131454349/jagabevifared_fekolumegifaxa_lurop.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368493/normal_5fc7157061f70.pdfIn PDF document text
    • https://cdn.sqhk.co/kupibetefuko/iimjafq/nefasikawibavujijuf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491725/normal_60297d5b04273.pdfIn PDF document text
    • http://rabota-plus.club/801426452808uiix.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377120/normal_5ff3ec4730c66.pdfIn PDF document text
    • https://gumomerad.weebly.com/uploads/1/3/1/8/131856086/filibopuratipani.pdfIn PDF document text
    • https://xasejudezorakoz.weebly.com/uploads/1/3/0/8/130813307/mumotuxem.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jilevatawew.epizy.com/78146632135.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_off0000dd06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD06 5032 bytes
SHA-256: 04687f78adf9b3e83b40baf3050f9b41395ef1ade41c2540a35b24b0a5ae6ce3
font_01_sfnt_off0000ee31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE31 10120 bytes
SHA-256: cbe2675a74ce04b146334579aebfc726fd6d843a53d69d5bda5c346de562f34a