Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a114a6911eecc38…

MALICIOUS

PDF

59.8 KB Created: 2020-11-28 15:28:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: a15bdb71268e6a0e597d88327728b279 SHA-1: 3e16f14ea1cffe97778f87a26bfb082d34077dd6 SHA-256: 7a114a6911eecc380a4634230c3c61521e59795ca768a6d554772fb8308e3cf3
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://traffset.ru/123?utm_term=another+word+for+hard+working+energetic+person PDF link annotation
    • https://nitetezelimon.weebly.com/uploads/1/3/1/4/131438651/libawifelokuf-kebes-kowufuvorujisez-mifada.pdfIn PDF document text
    • https://siregudak.weebly.com/uploads/1/3/0/7/130738759/308f030.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386836/normal_5f9b61d970d40.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379500/normal_5fa9d6d35b18e.pdfIn PDF document text
    • https://tipujinozubuva.weebly.com/uploads/1/3/4/8/134883375/70f2d03670c60.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453103/normal_5fa12feb29090.pdfIn PDF document text
    • https://gafalevomunu.weebly.com/uploads/1/3/4/2/134235362/vikofij_tobixugagoweb.pdfIn PDF document text
    • https://kenawogerawe.weebly.com/uploads/1/3/4/5/134593039/simadov.pdfIn PDF document text
    • https://wekubuzebebam.weebly.com/uploads/1/3/0/7/130739705/badogogobarusub.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368229/normal_5fa52f705db4a.pdfIn PDF document text
    • https://ramokazadi.weebly.com/uploads/1/3/4/4/134470245/274497.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381964/normal_5f90b119b2b23.pdfIn PDF document text
    • https://papunagaku.weebly.com/uploads/1/3/1/3/131384156/9293069.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/31e84803-6c1b-4f43-8821-8c27e916f1bf/shiness_the_lightning_kingdom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e906819-2189-4a74-8714-b470d031ac12/40355450936.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_off0000ac80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC80 5528 bytes
SHA-256: 2610118313fd40c37fe35cda78f3dad925ef08796e713ae42cdab7a0581c1aa9
font_01_sfnt_off0000bf62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF62 9656 bytes
SHA-256: 0057a7d6f449b45430eafda9be5b102e20edc2b4f066d20bcf54a5cb70da2794

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