Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bd048f2198d563b…

MALICIOUS

PDF

81.0 KB Created: 2021-03-10 19:19:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e732118938cf98b61d51a36c4b824fb0 SHA-1: dd80530f76e7166b9dadba04d1a68f20ad81b918 SHA-256: 2bd048f2198d563b423f4ca7985f4ddbbcae759e594c7bfda546b42ebb978375
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 numerous embedded URLs, many pointing to disposable hosting or link farms, indicating a likely attempt to redirect users to malicious sites. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggests this is a tactic for distributing malware or conducting phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://seumenha.ru/award?keyword=partition+piano+amelie+poulain+comptine+d+un+autre+%25C3%25A9t%25C3%25A9+pdf
    • https://kekulepolunan.weebly.com/uploads/1/3/4/8/134889268/minuwusagelubal_jonije.pdf
    • http://xidasetetobuge.scienceontheweb.net/mujokupi.pdf
    • https://cdn.sqhk.co/ragejeli/hbjjsge/63157790286.pdf
    • http://gupirigugorixuf.sportsontheweb.net/nawixekavi.pdf
    • http://ladekepevij.mygamesonline.org/lelunupugam.pdf
    • https://cdn.sqhk.co/rabataxuvax/bkjghib/3837285157.pdf
    • https://nutikatike.weebly.com/uploads/1/3/4/6/134601603/2c8082.pdf
    • http://fefiwizam.sportsontheweb.net/what_percentage_of_oxygen_do_you_breathe_in.pdf
    • https://rewojomivatal.weebly.com/uploads/1/3/5/3/135345623/243c0677a98b7.pdf
    • https://cdn.sqhk.co/jigitovewuk/ZjeKjjc/fitewasixemufexi.pdf
    • https://cdn.sqhk.co/vesagivara/hga2Wge/airplane_mode_movie_netflix_rating.pdf
    • https://gojulujowavid.weebly.com/uploads/1/3/4/8/134886085/83041155f.pdf
    • http://dokaxirugik.medianewsonline.com/clasificacion_de_las_obligaciones_derecho_civil_venezolano.pdf
    • https://dukuvurijo.weebly.com/uploads/1/3/4/5/134522813/lejesa_bibawudeniwikud_vifolajilaziz.pdf
    • http://jedomagisuw.getenjoyment.net/85680394112.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://pudolajuji.atwebpages.com/21229167570.pdf
    • http://nukilaba.myartsonline.com/apartheid_foreign_policy.pdf
    • https://uploads.strikinglycdn.com/files/214b517c-266b-48ff-bdad-0fef8ad56ee3/newiwowif.pdf
    • https://uploads.strikinglycdn.com/files/7306d066-eabb-45e5-9442-67e2d3723af4/bank_compliance_officer_qualifications.pdf
    • https://uploads.strikinglycdn.com/files/89f6d801-8eed-4630-bcf8-2cdd858a3f53/jarazirowilewofo.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dab0.bin
e96bbd7dc970d8dcafdf491e0c252ef36abbdf938c7b97b9e66e77c5ad08cee2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDAB0 5264 bytes
font_01_sfnt_off0000ec3b.bin
7faaa940f1387725defb3e0e5fe3b674b66ab881d58a32c1dd4a17387831c60a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC3B 16168 bytes
font_02_sfnt_off00011e1b.bin
ea75db71c9df7250347a03039f742fcd189f5fc3f08964e696816fa8b5227073		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11E1B 16092 bytes

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