Malicious PDF — malware analysis report

Static analysis result for SHA-256 302d9cb2b49de564…

MALICIOUS

PDF

77.7 KB Created: 2020-12-07 15:21:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 76586d383f52c972a5bd552ce7ef4e67 SHA-1: 9c7f93354c22e3b385293f81199327aaff8e5fbc SHA-256: 302d9cb2b49de564634a75cd1a9c83a0f4af9eb95f85e7b64dfb9d9a1d8da157
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains multiple external URIs, including one pointing to 'traffnew.ru', which is indicative of a phishing or malware distribution lure. The document body, though heavily obfuscated, suggests a pretext related to generating bibliographies, a common social engineering tactic.

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 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://traffnew.ru/aws?utm_term=chicago+style+format+bibliography+generator PDF link annotation
    • https://pivozedotafi.weebly.com/uploads/1/3/1/0/131070355/e680c1fcd1be.pdfIn PDF document text
    • https://vidajubobulixi.weebly.com/uploads/1/3/4/6/134650234/fedutapakid.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413848/normal_5fcc7bbb82aab.pdfIn PDF document text
    • https://folanejo.weebly.com/uploads/1/3/0/7/130776558/navonodukokizep.pdfIn PDF document text
    • https://lidafeli.weebly.com/uploads/1/3/4/6/134683499/kokazena.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367644/normal_5fac0fcb29e60.pdfIn PDF document text
    • https://pixamowogiru.weebly.com/uploads/1/3/4/5/134590731/b627e6800d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc042db8787e8798968ae67/t/5fcd13467ae85b53b29781a4/1607275334775/88324279893.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf49661972c46e3c94d22b/1606371686610/narezot.pdfIn PDF document text
    • https://s3.amazonaws.com/regegozumekoza/beautiful_html_forms_design.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc00c29085bf90c0ef85582/t/5fc0fe451972c46e3cc1f641/1606483530120/27501363190.pdfIn PDF document text
    • https://s3.amazonaws.com/goneduzum/native_bacillus_licheniformis_protease.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc2460ab-5027-457c-8f57-869bac4478dc/tasolekasubitimewozekuvi.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_off0000f3cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3CB 5576 bytes
SHA-256: ee0482b4b70bdd052e6973cdb745e7619346a6d68a08518e771c8d31e96cfa15
font_01_sfnt_off0001069b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1069B 10464 bytes
SHA-256: 4747c94b2645d9dcdb2148f8337124c415e7a2bb184abed9fb5241630039a5f5

Open this report in the interactive analyzer, or submit your own file for analysis.