Malicious PDF — malware analysis report

Static analysis result for SHA-256 95d635ef9f9d8340…

MALICIOUS

PDF

66.3 KB Created: 2021-01-12 00:31:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d5645ce4e1e1df05b54f130f30c7c4ca SHA-1: 9b572ff88ae0afa71fc6bdc9b8be1a0002281f7f SHA-256: 95d635ef9f9d8340accb8a494123321c6c103ba070522a36f46c981410b4ec88
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many hosted on disposable domains, suggesting a link farm designed to redirect users to potentially malicious sites. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a high likelihood of this being a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/aws?utm_term=heart+beats+kannada+full+movie PDF link annotation
    • https://site-1168332.mozfiles.com/files/1168332/35968665797.pdfIn PDF document text
    • https://site-1168354.mozfiles.com/files/1168354/horror_movie_wallpapers_for_android_phones.pdfIn PDF document text
    • https://site-1215102.mozfiles.com/files/1215102/komozejabanoputumukibupiz.pdfIn PDF document text
    • https://cdn.sqhk.co/makafabakuna/K0hfqtH/the_solar_system_pictures_and_information.pdfIn PDF document text
    • https://site-1176516.mozfiles.com/files/1176516/12284175042.pdfIn PDF document text
    • https://site-1171584.mozfiles.com/files/1171584/eat_it_all_comes_out.pdfIn PDF document text
    • https://site-1178817.mozfiles.com/files/1178817/disney_finger_scanner.pdfIn PDF document text
    • https://site-1206652.mozfiles.com/files/1206652/89958119553.pdfIn PDF document text
    • https://cdn.sqhk.co/wemojezuvegi/jdfywji/chase_mobile_deposit_faq.pdfIn PDF document text
    • https://site-1173386.mozfiles.com/files/1173386/41725551463.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/rujimidujek/7590222391.pdfIn PDF document text
    • https://s3.amazonaws.com/levumoduf/examiners_report_2018_legal.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c7c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7C0 5280 bytes
SHA-256: 18dbb2b57d4290e9e67a7ac4c027c5e90451dad1c3d806bef082c30d11a9a01c
font_01_sfnt_off0000d9a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9A1 10192 bytes
SHA-256: 619c2d8b703ed32e16f5ba8c7134704613cca35f667d03c037b9da8ee0fc9d57

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