Malicious PDF — malware analysis report

Static analysis result for SHA-256 070456b3e5279c9d…

MALICIOUS

PDF

79.1 KB Created: 2020-11-22 06:31:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: f35779852a8bff9ddef63f9f0ddbe198 SHA-1: e17c4e9db59670ee0f9196c35afa1e621b2d6c41 SHA-256: 070456b3e5279c9dab5784c30c6d5679061765db67fe09dc16bd6ca3daf5d9b7
136 Risk Score

Malware Insights

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

The PDF contains heuristics indicating it is a phishing lure, redirecting users to a suspicious URL. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/123?utm_term=howe+truss+bridge+description PDF link annotation
    • https://xonimitofowe.weebly.com/uploads/1/3/2/6/132682232/9013956.pdfIn PDF document text
    • https://gejovekozeja.weebly.com/uploads/1/3/4/4/134401956/gebapiwejijekomo.pdfIn PDF document text
    • https://saxexowiki.weebly.com/uploads/1/3/0/9/130969873/3166c2c0ec97.pdfIn PDF document text
    • https://mimejimewib.weebly.com/uploads/1/3/4/6/134608848/fee56554b5599d4.pdfIn PDF document text
    • https://tugagifozige.weebly.com/uploads/1/3/4/2/134265986/rifigomab_fexav.pdfIn PDF document text
    • https://roninuvanajeg.weebly.com/uploads/1/3/1/3/131379749/00c46.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365563/normal_5f8a91ea82c97.pdfIn PDF document text
    • https://vuvajufuzuno.weebly.com/uploads/1/3/4/4/134480129/fusug.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/5166e14e-8410-47b8-a7cb-95a986738f06/ponexajagalesepo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89fa3742-e477-4173-898b-84832dadda44/sekafewafaberuzenux.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/98401108610.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/40166464668.pdfIn PDF document text
    • https://s3.amazonaws.com/povodijirig/lamia_report_nexans.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/fantasy_football_news_and_analysis.pdfIn PDF document text
    • https://s3.amazonaws.com/bejideba/schumacher_manual_battery_charger_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/desenaz/45778073908.pdfIn PDF document text
    • https://s3.amazonaws.com/vovabagubajegeb/85953765413.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7BE 5192 bytes
SHA-256: 3f39fc197cf36b99ff7c1c6c29b623c6d5753786a26c648ae333b2842f8e4a0a
font_01_sfnt_off00010987.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10987 10988 bytes
SHA-256: 0e8941e9f4dddb16e06a6e847731876e6887da645fcbacbad745f1807ec23512