Malicious PDF — malware analysis report

Static analysis result for SHA-256 4dcc2605a20c9bc4…

MALICIOUS

PDF

90.6 KB Created: 2021-03-10 04:43:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 91ec90b8a00ffac736be4f1d726d0028 SHA-1: 5c30a4b313451702816220786136ac16f8f9b335 SHA-256: 4dcc2605a20c9bc46a52f92bbf0bfa4adab52555a6c8862a1e21731ac2226b3a
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://yafferge.ru/strik?utm_term=army+golden+master+ios In PDF document text
    • https://static.s123-cdn-static.com/uploads/4388427/normal_5ff259ba7ddc2.pdfIn PDF document text
    • http://begdas.fun/panasonic_microwave_service_manual8idg7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491725/normal_5fe3d89c8488f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480728/normal_601d552551794.pdfIn PDF document text
    • http://tryadasert.online/fisubafatabibizdsb6.pdfIn PDF document text
    • http://13millions-warzone.store/peribepudosojisunjn5w.pdfIn PDF document text
    • http://grigolia-studio.ru/business_english_esl_worksheetssjego.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366028/normal_602d343bda357.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496585/normal_5ffc869cc8d20.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366336/normal_5febbff635876.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386597/normal_6011a001da2d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447431/normal_5fd2d7bc993c5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407100/normal_5fe1cfe089b97.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://959e49da-b405-4961-97d4-5c1bb2e9a628.filesusr.com/ugd/ab0441_fe241d99a42b4d118d5ef81c80e66efb.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/muxegeza/enchanting_wow_classic_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tamobalasu/69849913602.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/57664689086.pdfIn PDF document text
    • http://bavidoripo.epizy.com/xetetuvasatenalasizubutol.pdfIn PDF document text
    • https://8137cd1e-393d-4948-8193-eca935452849.filesusr.com/ugd/756799_252c84e3869d4f83b02e67644d16c25f.pdf?index=trueIn PDF document text
    • https://42172c5f-463d-425f-bc49-3536d5e9b788.filesusr.com/ugd/3e9aab_47f96dcafc88446ebeceb45de5a1e8cb.pdf?index=trueIn PDF document text
    • http://dejamatokato.rf.gd/31234406625.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaporam/32254541708.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawe/types_of_entrepreneurship_skills.pdfIn PDF document text
    • https://275320ff-96dd-455a-9699-a0fdc58b27a5.filesusr.com/ugd/943725_ad4c1a7dfafd4d3cbb7d1fb588bf98b7.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011b8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B8E 5236 bytes
SHA-256: da1ac145b72c6a5f5d09b5daab1545858dcbbb9867967cd9d09ee15f3ea3f9dd
font_01_sfnt_off00012d45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D45 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off000135d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135D2 11404 bytes
SHA-256: 4a38229c58327b619d973ffe5786f32fae1b9d5dfd8e87e362f3fa0757b3381e

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