Malicious PDF — malware analysis report

Static analysis result for SHA-256 d04981a185eda2aa…

MALICIOUS

PDF

67.6 KB Created: 2021-02-28 15:18:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8cca64f342483d3efe27b667365be1b5 SHA-1: 0e3c611958476705735c84eb2265415ad917ab0b SHA-256: d04981a185eda2aaf602ccc7b9ae27efa66f1851a144b89cf53241dae5b95b19
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://baarspo.ru/award?keyword=rogue+lawyer+review PDF link annotation
    • https://cdn.sqhk.co/zivuronufepu/djbijhb/bullet_blender_amazon_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/defisepeniba/hgHcjjD/74758083585.pdfIn PDF document text
    • http://zememor.sportsontheweb.net/chosen_house_of_night_summary.pdfIn PDF document text
    • https://gosawopidelogeb.weebly.com/uploads/1/3/4/7/134714887/gizirejajogaziko.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454161/normal_600e9e49b3c38.pdfIn PDF document text
    • https://cdn.sqhk.co/tutabalero/eVpOwOz/zikat.pdfIn PDF document text
    • https://cdn.sqhk.co/dewavasese/cwanCha/81222096834.pdfIn PDF document text
    • https://cdn.sqhk.co/naziwixolagu/jjdgkjh/69167912198.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496404/normal_5fe087bbdd3a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464529/normal_5fe75d1d74217.pdfIn PDF document text
    • https://nitiruminaxodax.weebly.com/uploads/1/3/0/7/130738633/loxukidexabavojopak.pdfIn PDF document text
    • https://cdn.sqhk.co/niririga/bgeVG9U/82294894833.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457305/normal_6039a32980248.pdfIn PDF document text
    • https://cdn.sqhk.co/lepavenujal/BPiKgeW/niwevewemip.pdfIn PDF document text
    • https://cdn.sqhk.co/bujutinape/ewjbIif/war_dragons_forum_update.pdfIn PDF document text
    • https://vidanametok.weebly.com/uploads/1/3/4/3/134318125/reziz_bitoto_mobego.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://luvabokinoleg.onlinewebshop.net/muzanapaliligular.pdfIn PDF document text
    • http://lokanubuxona.rf.gd/92710600979.pdfIn PDF document text
    • http://gelepovasogadax.epizy.com/81353106285.pdfIn PDF document text
    • http://gixarewujedel.atwebpages.com/89816725488.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_off0000cbde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBDE 4936 bytes
SHA-256: 5bfefea4200412cc54f5fe0bbe292738ab382611b80b572bad35afc60a3afbdd
font_01_sfnt_off0000dcdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCDD 10412 bytes
SHA-256: 4093596290a1e3936057578fd66192875fa44533a5537d91516c16e4d9c34ea9

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