Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d3ea36be5122841…

MALICIOUS

PDF

69.4 KB Created: 2020-11-11 14:26:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 60cca36b8821c10dd62b5b6a181215cf SHA-1: 99f6df8f51fdea74166ac7d6c8e7ac157430aa3a SHA-256: 7d3ea36be512284147b921a0c65043e994c9e4472019b15c9ad0f9c892ac9208
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://trafftec.ru/strik?keyword=riverhouse+motor+lodge+gatlinburg+tn PDF link annotation
    • https://mimasalidapu.weebly.com/uploads/1/3/4/4/134466186/gigorel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482648/normal_5fab004494ef9.pdfIn PDF document text
    • https://lojijuzirikoza.weebly.com/uploads/1/3/4/5/134593465/2932867.pdfIn PDF document text
    • https://taxebalipawixu.weebly.com/uploads/1/3/4/5/134598188/8508818.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425507/normal_5f9affd9e500b.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://uploads.strikinglycdn.com/files/a695e052-5a57-4255-a737-f549d3967145/reiboot_license_key_crack.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/abs_and_squat_challenge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d2207ec-a0b6-47f6-af03-18c620ce89e3/medidas_de_polines_de_madera.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/48431226359.pdfIn PDF document text
    • https://s3.amazonaws.com/radubozufiwo/tigedubunijoxi.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/laplace_transform_table.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2aedee75-dfc5-4d80-8016-70706367dfb0/65805945200.pdfIn PDF document text
    • https://s3.amazonaws.com/libeganot/25071020316.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/95666324696.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_off0000c42a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC42A 5328 bytes
SHA-256: ca81340493f02d9f9cbc7e12ea32728d4f231977ba147abb1fa4f477e8a6d861
font_01_sfnt_off0000d62b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD62B 10812 bytes
SHA-256: eb07002631b469112ebbdc58b443ad85adf3840fe392ca7740dc8cbcd940b6c9
font_02_sfnt_off0000faba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFABA 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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