Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a2f3542f3ec64d0…

MALICIOUS

PDF

70.7 KB Created: 2021-02-14 23:52:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: aa62e6056b64c30fe3af94922d66a5ec SHA-1: 07101bfac41b8bc2255bf810598251a0337776be SHA-256: 4a2f3542f3ec64d01b832c3a31ca9dd703e67a27bef82b81aa444b5f8770b305
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=giovanni+civardi+complete+guide+to+drawing PDF link annotation
    • https://wumetitazidizo.weebly.com/uploads/1/3/4/8/134885052/najuvegu_paganikolup_xurozipabole.pdfIn PDF document text
    • https://kelebewo.weebly.com/uploads/1/3/4/3/134359650/laruganepoz.pdfIn PDF document text
    • http://saxozumipelezip.22web.org/46268545795.pdfIn PDF document text
    • https://winomumamo.weebly.com/uploads/1/3/1/0/131070375/48421d683cd607.pdfIn PDF document text
    • http://potobol.22web.org/idsa_guidelines_c._diff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420905/normal_600d68685a28b.pdfIn PDF document text
    • https://ribofefafuf.weebly.com/uploads/1/3/4/7/134770843/4f608cd5a9291ed.pdfIn PDF document text
    • https://jesasifewom.weebly.com/uploads/1/3/1/4/131453969/5b91bc93965.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500200/normal_601b19fe8195e.pdfIn PDF document text
    • https://gefivepuli.weebly.com/uploads/1/3/4/6/134620723/4244273.pdfIn PDF document text
    • https://pedagojewixa.weebly.com/uploads/1/3/1/3/131398360/b81345d075a.pdfIn PDF document text
    • https://zanolidades.weebly.com/uploads/1/3/2/6/132695759/xibojakiduwowolebim.pdfIn PDF document text
    • https://dejizova.weebly.com/uploads/1/3/3/9/133986792/bupoferiditanimut.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417313/normal_6026bf5cc6c7c.pdfIn PDF document text
    • https://jagavovukivotu.weebly.com/uploads/1/3/4/8/134881855/7449768.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dezologukow.rf.gd/anestesia_local_en_el_embarazo.pdfIn PDF document text
    • http://dexifuv.epizy.com/5380806687.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_off0000d94e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD94E 5400 bytes
SHA-256: 2d4616139e5d68171c6550f0263a01bdbfee3d783a63875ee3496c07f7cf5cea
font_01_sfnt_off0000ebaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBAF 9828 bytes
SHA-256: b0f7c62659779796cda4fe889b46682ade2d153bb82fbbc2f19c9c9b45fd02ca

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