Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7fed9e7e336814c…

MALICIOUS

PDF

84.6 KB Created: 2020-12-22 03:03:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 9d6d19ab167faeb25e855d28f3b7694f SHA-1: 3f4bc3578a9af671eaad9beb2352a7652799c467 SHA-256: d7fed9e7e336814ca7a50cca7da4c7e8d562219818481e3c3c72d4feba5d7689
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, traffmen.ru, which is likely used to deliver a malicious payload or phish for credentials. The document body, though heavily obfuscated, contains text related to 'Owsley county kentucky population', suggesting a lure to entice users to click the malicious link. The ML classifier and ClamAV detection further support the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffmen.ru/123?utm_term=owsley+county+kentucky+population In PDF document text
    • https://xixipafo.weebly.com/uploads/1/3/4/7/134745113/0515b11ddd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385437/normal_5fb576bbd5210.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369660/normal_5fa30b4be2471.pdfIn PDF document text
    • https://rimidewazasi.weebly.com/uploads/1/3/4/3/134317879/1e2a53ee904081e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448551/normal_5fb284308ad65.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/nosepevozux/problem_solving_skills_examples_for_performance_review.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/vubarexewufunigu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc011b424b06a7eb3fa7d30/t/5fc40a2beaf37e3b641a6694/1606683188851/3674477698.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4e59646-d550-4787-b53c-db4cb38e469d/linear_systems_and_signals_3rd_edition_by_lathi_and_green.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fe031ce1091525336569659/t/5fe111276db0180d705e461e/1608585511824/icd_10_coding_guidelines_for_pregnancy.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe0a7818e72e5fdb9e0d19/1606290044739/zombies_origins_staff_upgrade_guide.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_off00010b3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B3E 5116 bytes
SHA-256: 2adea8a3a9555e6a2865f3fd94f20fd98c06469c4803deec04302de0c56903bd
font_01_sfnt_off00011cd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CD6 11420 bytes
SHA-256: c577571a1166575bb8b086a928e59727562ad59bb4af2609675f68f52fa5444e

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