Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6782b596b43912f…

MALICIOUS

PDF

76.9 KB Created: 2021-03-30 23:24:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c99d268c2dab85006d4011d3f23977e8 SHA-1: 1278eecefde28d6bf3a6289c209cf80e4536d1b5 SHA-256: e6782b596b43912f4d9db87a261a7bb5600d05405baca2cf7a9a82b35d73c40d
126 Risk Score

Malware Insights

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

The PDF contains numerous external links, with many pointing to disposable domains and link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a common phishing lure designed to redirect users to malicious sites.

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://ponafet.ru/123?utm_term=catalog+information+synonym
    • http://vosojivaru.mypressonline.com/tadukisavabewibekepipujag.pdf
    • https://tovexalo.weebly.com/uploads/1/3/5/3/135348509/depemipedife-viwebekudi-pigem.pdf
    • https://toxutumopomepe.weebly.com/uploads/1/3/5/3/135327812/sepaxokevem-vinovovulej-mavaxoluxu.pdf
    • http://lassituda.online/5759876319kgrgu.pdf
    • http://apparentlyopt.com/detukulutefopowilb48d6.pdf
    • http://kotudekudoges.getenjoyment.net/methods_of_environmental_valuation.pdf
    • http://ruzopiter.iblogger.org/29571422132.pdf
    • https://dimenitajobe.weebly.com/uploads/1/3/4/4/134444553/9795615.pdf
    • http://expo-kit.ru/spray_gun_not_spraying_evenlyxze3c.pdf
    • https://soxoxalumowaju.weebly.com/uploads/1/3/4/7/134768556/tibexuzed-ridexaw.pdf
    • http://dokarukaxita.22web.org/99989487819.pdf
    • http://topcabinets.xyz/nekupexo9a4fz.pdf
    • http://siwikilapezufi.iblogger.org/how_can_teachers_use_assessment_to_guide_instruction.pdf
    • https://pigaxapi.weebly.com/uploads/1/3/2/8/132815084/8631983.pdf
    • http://fodadasome.iblogger.org/82611339061.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/vososasoxumete/vebipizuxenefi.pdf
    • http://dikavara.epizy.com/suxomawiderisoxox.pdf
    • https://s3.amazonaws.com/purawuma/14_finance_commission_report_summary.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e910.bin
1a8e401dfb4a095acdea0ec7f0c354b59a2e4254714a338e3dc3b3d52771fed7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE910 5092 bytes
font_01_sfnt_off0000fa55.bin
78d8bc20e95b37e81f6e99e6e6a276fefc0d566c289a075e1d04e80b021532a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA55 13544 bytes

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