Malicious PDF — malware analysis report

Static analysis result for SHA-256 19620ed40a1c2598…

MALICIOUS

PDF

74.2 KB Created: 2021-03-01 01:14:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d083e7f60b1a848f3efb75fe6297d665 SHA-1: 7bddeec20eb086c2d826db7808d7cf8ef9ba5ce5 SHA-256: 19620ed40a1c25989ebe438a72229c161bb5895c2df19a335ebae69f1d64a135
96 Risk Score

Malware Insights

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

The file was detected as a malicious PDF by ML classifiers and ClamAV, indicating a phishing or trojan payload. The embedded URI points to a suspicious domain, likely intended to host malicious content or redirect the user. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to exploit vulnerabilities or trick the user into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://nipisod.ru/123?utm_term=are+reusable+k+cups+worth+it
    • http://bioforcecolumbia.site/skyrim_expert_spellse8dgq.pdf
    • http://bilet-pdd.site/action_research_in_education_a_practical_guideck7h9.pdf
    • http://babubusawase.22web.org/creative_timeline_templates.pdf
    • https://cdn-cms.f-static.net/uploads/4377113/normal_6018eb4aacfd4.pdf
    • http://siwupojotuj.getenjoyment.net/homelite_xl-12_chainsaw_manual.pdf
    • http://artistichomesolutions.com/solemuxesozef5eodu.pdf
    • http://pafekusiwajida.66ghz.com/dead_space_2_severed.pdf
    • http://summer-italy.fun/xazaluptr6kn.pdf
    • http://jitufar.22web.org/16464120503.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xamibudasagas/jizibonominatofareme.pdf
    • https://s3.amazonaws.com/juwofuxufijup/vonimenodi.pdf
    • https://s3.amazonaws.com/vofadoloves/walomoputiko.pdf
    • http://vejegaba.atwebpages.com/xorenuxuwonemuxewidaso.pdf
    • https://s3.amazonaws.com/jupoti/graphic_design_basics_book_free.pdf
    • http://kosezofejesuxef.atwebpages.com/75245328226.pdf
    • http://lepuxateg.epizy.com/90264898278.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_off0000e726.bin
3bd56cfdb7c0a602745a078fbf35c90920f6c0ac5fc56ab05f391187118f6f3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE726 5308 bytes
font_01_sfnt_off0000f93b.bin
9efc889b9a277f052c5e378d849f4eb03fe3506fdea50558589558b856c6520a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF93B 10200 bytes

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