Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ac42900117ad274…

MALICIOUS

PDF

76.8 KB Created: 2021-03-22 13:28:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 7deef75fa5b4e7b78bb9f311884e09e1 SHA-1: b8ae81d33e8686a3530c73bfba874370659f60f6 SHA-256: 0ac42900117ad274ae1e3d80b0e0523163ca824fd22866957fb6f30dcaf9d670
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating a high probability of maliciousness. The document contains numerous external URIs, many pointing to disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the overall structure strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://ponafet.ru/award?keyword=aacsb+salary+survey+2020+pdf PDF link annotation
    • http://sowakowakemim.mygamesonline.org/xekexadosusowalose.pdfIn PDF document text
    • http://jabilevij.mypressonline.com/10952759593.pdfIn PDF document text
    • https://pozufijuxib.weebly.com/uploads/1/3/0/7/130775557/rokiva.pdfIn PDF document text
    • http://help-feedback-amzn6.xyz/alfa_cetoanalogos_de_aminoacidos5su40.pdfIn PDF document text
    • http://drovazvenigorod.ru/42364240185hletq.pdfIn PDF document text
    • http://nawitebexu.medianewsonline.com/similar_triangles_notes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427544/normal_601c70323e1e1.pdfIn PDF document text
    • https://cdn.sqhk.co/womawuxinuge/2yKhcwt/60221314510.pdfIn PDF document text
    • http://dragonflysagewellness.com/cost_of_lg_washer_repair6u7eg.pdfIn PDF document text
    • https://cdn.sqhk.co/bisadidizi/ggoijjc/xidimowobinexudafaw.pdfIn PDF document text
    • https://cdn.sqhk.co/xaduwudixum/pgigfgg/capitalism_us_history_definition.pdfIn PDF document text
    • https://cdn.sqhk.co/zowesifona/hbrij4z/fipafaxit.pdfIn PDF document text
    • https://tewosafaxuw.weebly.com/uploads/1/3/1/3/131379700/fe88372348a27b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nujugeteteda.myartsonline.com/medical_instrumentation_john_g_webster.pdfIn PDF document text
    • https://786c536d-253b-4a15-94df-129c4693a223.filesusr.com/ugd/1fc311_8d66024a886042988a32d0b24ae713cf.pdf?index=trueIn PDF document text
    • https://1a6defe7-92a0-4357-8a70-d3bce85d30c9.filesusr.com/ugd/385065_9b7da41074cb4a6d9936b1184970634d.pdf?index=trueIn PDF document text
    • http://dirulibas.onlinewebshop.net/physics_important_formulas_for_neet_download.pdfIn PDF document text
    • https://6205d428-d5dc-494e-bbc3-e2236f9d811e.filesusr.com/ugd/6885a6_2a7b09ccfebe467faed061619534b17c.pdf?index=trueIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB6 5712 bytes
SHA-256: d5b2858e1e93423146efcec320b60cf8149f6f7558e73447567071b1c9d8a6c8
font_01_sfnt_off0000ff48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF48 11560 bytes
SHA-256: 7cff13960af4a7bd859f0f439156c616ed35a3bf0d0cde6ccf17e2b98327037a

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