Malicious PDF — malware analysis report

Static analysis result for SHA-256 8760e626c0443778…

MALICIOUS

PDF

93.6 KB Created: 2020-12-07 16:44:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d80b518cbbb7979c4d996a547e369229 SHA-1: beb25682365572548627069ac04954354a2ac9af SHA-256: 8760e626c0443778b563a954fd5784300321e2c2d3560f48d8c2d2e5534c4f5f
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://trafficel.ru/strik?utm_term=fatwa+on+terrorism+in+urdu+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4448976/normal_5fa30ffc1da91.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428035/normal_5fb29e714ae73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375204/normal_5f8eb7951f524.pdfIn PDF document text
    • https://xavaxulesunup.weebly.com/uploads/1/3/4/3/134379996/ac70c4ad322f0.pdfIn PDF document text
    • https://varovugunigode.weebly.com/uploads/1/3/4/4/134480676/sezobe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xutomoxu/apk_mods_for_minecraft_pe.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/tanarijigovelixer.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/luzakilujunemolawom.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc36057abaecd3318320830/t/5fcdfe4983d2ac65cc386815/1607335498192/descargar_m64plus_fz_pro_emulator_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/perobumubozifoxigub.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3205912facd59cebb7138/t/5fc903835452ea045f659294/1607009158265/midipu.pdfIn PDF document text
    • https://s3.amazonaws.com/vebogotexaf/gexofo.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/luduboredotoj.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001255b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1255B 3752 bytes
SHA-256: 46d490ec1ef004965a730e2b778ebbb6348f569519f8e04fae8db2a2170cf3d0
font_01_sfnt_off00013292.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13292 5204 bytes
SHA-256: 0f289f06cf2820eae154674b9ccf8562e2d8dcd5e48cf4ec70f970d9794c6660
font_02_sfnt_off00014445.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14445 10788 bytes
SHA-256: 3dc2f7528117c0f1db6219acae08b04e0194bb0f9dec54e8a92a7ec0daaf23bd

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