Malicious PDF — malware analysis report

Static analysis result for SHA-256 a65a5b31e3d06c3d…

MALICIOUS

PDF

44.0 KB Created: 2020-10-01 07:16:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e095a458cef1e76ade3ab5d256f78235 SHA-1: 3710f1abd28a6c45f8172b5c7fa0260dab15d6a1 SHA-256: a65a5b31e3d06c3d8a6dac9adda7d56de7ac1c310b984352d062747aea794507
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a significant number of embedded links, with one identified as a malicious redirector. The ML classifier strongly flagged this PDF as malicious. The primary attack vector appears to be a link farm designed to lure users to malicious infrastructure, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ggtraff.ru/strik?keyword=annex+17+reach+pdf In PDF document text
    • http://files.agreatcupofcoffee.com/uploads/1/3/1/4/131409498/bipos.pdfIn PDF document text
    • http://files.danceofthemagi.com/uploads/1/3/0/7/130739288/vodabepo.pdfIn PDF document text
    • http://zeton.kestersoncoyotes.com/uploads/1/3/1/3/131383493/3820701.pdfIn PDF document text
    • http://jidug.patrickmorriseyunlawfulacts.com/uploads/1/3/1/3/131383434/tivezinixi.pdfIn PDF document text
    • http://files.alextihonov.com/uploads/1/3/1/6/131606006/gepexu.pdfIn PDF document text
    • http://files.ipmed.org/uploads/1/3/1/0/131070713/joxewomebasuze-ditexosaf.pdfIn PDF document text
    • http://moranipe.acupunctureintoronto.com/uploads/1/3/2/6/132695832/55f3a0acd.pdfIn PDF document text
    • http://voloxen.thecounselingcompanion.com/uploads/1/3/1/8/131856772/1409504.pdfIn PDF document text
    • http://files.argachurches.com/uploads/1/3/1/6/131607029/1723716.pdfIn PDF document text
    • http://files.ewb-midmaryland.org/uploads/1/3/1/4/131483209/pitedozimugatag.pdfIn PDF document text
    • http://vuxoro.design4hri.net/uploads/1/3/0/8/130873951/pitufifawavul.pdfIn PDF document text
    • http://xasune.queenoftheringbomb.com/uploads/1/3/1/3/131381088/vozaxutijaruzuw.pdfIn PDF document text
    • http://files.laurawritingcoach.com/uploads/1/3/0/8/130874119/vuburitonew.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3525/5203/files/52487829795.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5091/7269/files/partial_molar_volume_lab_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8049/9879/files/ideal_gas_law_experiment_report.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005fa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FA7 4772 bytes
SHA-256: 5cb82d644f82ebd99801fbfeab53f2617bddb18bdcfafadf43909e4370af4387
font_01_sfnt_off00006fd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FD1 10924 bytes
SHA-256: 1a058af71075e667ba71618cd274696a08a769ec631f4581903d253af315f8a1
font_02_sfnt_off00009504.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9504 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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