Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c6ef2c57468c1dc…

MALICIOUS

PDF

79.5 KB Created: 2021-03-27 13:41:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: f0e0a5b2c09802c42fd34b3b81f2cb5d SHA-1: 4f9a93f9e29b872018fd04d6a37682ac97d65ea4 SHA-256: 3c6ef2c57468c1dc6b600ff90e6d322f968403079c5f796a1b5c3353dc5d9858
156 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 embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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 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.
  • 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://pelibifir.ru/strik?utm_term=manual+cargador+imax+b6ac+dual+power PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369632/normal_6039586d0813d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376870/normal_5fe852068c752.pdfIn PDF document text
    • https://cdn.sqhk.co/sevidekepige/gjCTzYW/90415503999.pdfIn PDF document text
    • https://cdn.sqhk.co/voxedijudibo/catwiiQ/xivijamidixe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://8bd0dbf5-62e0-4684-a95a-1d9666dfa34a.filesusr.com/ugd/e71694_60f4ab02c5d64e299a0b00d64ab62ae9.pdf?index=trueIn PDF document text
    • https://3c3713de-992c-4571-92b4-00afcb8cb2c1.filesusr.com/ugd/9dbdb2_6570e6e5565d40409e94de059436b063.pdf?index=trueIn PDF document text
    • https://bd7a0a6f-bbfd-49cc-ba41-c3f2778102d9.filesusr.com/ugd/9ea91e_72a2f0a94d94406684087ed2cb729d6f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bagokiko/magistrates_court_sentencing_guidelines_speeding.pdfIn PDF document text
    • https://67a4337f-2b79-4d04-9c1d-2578c80f4945.filesusr.com/ugd/964009_c94f183b9a684f5485299de0478585fe.pdf?index=trueIn PDF document text
    • https://0306adf0-382e-42f1-903d-71c3961c97f1.filesusr.com/ugd/7ff653_5b47b57bf0064f6e91d1cf8a5b10da9a.pdf?index=trueIn PDF document text
    • https://c931c956-7f53-4e4e-96dc-27d7f003ba63.filesusr.com/ugd/b80c10_dbf25ab920ae4ff08b12e08d69a6932e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/datarofapakil/jefugobadevifi.pdfIn PDF document text
    • https://75a697d3-84f0-44cf-bab9-f05e37020c50.filesusr.com/ugd/7c3584_ca6cbce379f54affb935f6fd5dc52b56.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/android_tv_update_sharp.pdfIn PDF document text
    • https://s3.amazonaws.com/tobojelusiwi/jbl_clip_2_bluetooth_speaker_manual.pdfIn PDF document text
    • https://793776f3-68b4-44d3-947a-596ce2c6f652.filesusr.com/ugd/4e977a_7a3cccd2431c4d7881cb637c89e7178d.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 4

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_off0000f5d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5D0 5676 bytes
SHA-256: d119321c154a285742e26d78dfd9e7615f422fd215004000c5bb0b80f909ee5d
font_01_sfnt_off0001092a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1092A 11568 bytes
SHA-256: 8c8180e8f7f66f829826a0daaa01d17449988698dd2c82915f14f34b334a2d3c

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