Malicious PDF — malware analysis report

Static analysis result for SHA-256 15242178748763b2…

MALICIOUS

PDF

64.1 KB Created: 2020-11-25 15:49:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: e74154e48f49bc347f636107238bf0e7 SHA-1: 619eb294febdc48bf0a9fc13ce118020dc5c435c SHA-256: 15242178748763b2fa9aeb7579a255f5cbc273a11ba31cc6f8287bdb3fd4231d
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. One of these links, 'https://traffking.ru/123?utm_term=tippmann+x7+phenom+manual', is flagged as an external URI. The ClamAV detection and ML classifier strongly indicate maliciousness, likely related to phishing or malware distribution. No scripts were extracted, but the presence of numerous external links suggests an attempt to redirect the user to malicious content or a phishing site.

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://traffking.ru/123?utm_term=tippmann+x7+phenom+manual PDF link annotation
    • https://sopopubepomexak.weebly.com/uploads/1/3/4/2/134265445/4339948.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381756/normal_5f8c7bf9f390c.pdfIn PDF document text
    • https://likosevatifipol.weebly.com/uploads/1/3/4/5/134584064/7637060.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1449ea9-39c6-4d61-abc5-0951559e430a/on_the_historicity_of_jesus.pdfIn PDF document text
    • https://s3.amazonaws.com/desekusoxi/segakawimewerupawumozi.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/4350934035.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d874444-f8d8-4a32-9a9f-9f2b79adacd1/otis_spunkmeyer_cookie_oven_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad210775-e36b-482d-b4e0-766870d92007/1863484477.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcabffd8-856e-47a1-b604-09b5965015fc/lyndall_urwick_aportes_a_la_administracion.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/22553370955.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b644ee70-6c5e-4b0a-a943-33f3c6a80140/76206845445.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd7c8ab8-c81d-41dc-be10-1afea6ea5ea9/powigevazajafe.pdfIn PDF document text
    • https://s3.amazonaws.com/begijufadi/55712346329.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_off0000af97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF97 4028 bytes
SHA-256: a450c575fd141f724597ee60e88eb100ab9c39668235dda9dc0b6efb931a74dc
font_01_sfnt_off0000bddb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDDB 4880 bytes
SHA-256: 514d833c441968839496e760b4dc5e2e8cf101756972f1b748ff6f13f1eb7216
font_02_sfnt_off0000ce58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE58 10548 bytes
SHA-256: d8245e5cae57ce1f96e2746a367ee06cea225884393fc422a3dd039be89ef0af

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