Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a7c4293a708a3eb…

MALICIOUS

PDF

153.2 KB Created: 2021-04-30 07:52:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8c0583c74dde205e9c8d543d5d3537ad SHA-1: b25ffafdb22f647f634231cda725418d859d5dd8 SHA-256: 1a7c4293a708a3eb6145f972c2ead5379d50a0f98f88f0873f2d86134a38af11
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9959

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/strik?utm_term=what+is+filipino+knife+fighting+called PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365608/normal_5fda53b2032fb.pdfIn PDF document text
    • https://cdn.sqhk.co/miloxuso/ujd0JLG/43788496077.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417222/normal_603b07e3222d7.pdfIn PDF document text
    • https://cdn.sqhk.co/jumivosokigo/gjcVjgl/livuparofixavasubexogipux.pdfIn PDF document text
    • https://cdn.sqhk.co/giwitosak/hhfiijf/4runner_nightshade_vs_trd_pro.pdfIn PDF document text
    • https://cdn.sqhk.co/ditetijesi/8jdghbf/nupiloluwakejenak.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393893/normal_5fffdd154b580.pdfIn PDF document text
    • https://cdn.sqhk.co/fasotaluvose/jhgijjf/daresirobelog.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462982/normal_60504e7bd68e2.pdfIn PDF document text
    • https://cdn.sqhk.co/rularijulen/fjiQajf/67304948457.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425760/normal_600d89947ce0b.pdfIn PDF document text
    • https://cdn.sqhk.co/pijajawopoji/ckGO2pJ/4124864632.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444110/normal_604a80cc237a2.pdfIn PDF document text
    • https://cdn.sqhk.co/zesonixiv/hSibgd5/lagavaxadaveburon.pdfIn PDF document text
    • http://wudenufodoroziv.scienceontheweb.net/list_of_important_days_in.pdfIn PDF document text
    • https://cdn.sqhk.co/linotepibubi/chcBmTT/regal_movie_theater_times.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476147/normal_600f9b00c472e.pdfIn PDF document text
    • https://cdn.sqhk.co/nomavunut/djgg5zi/sonchus_oleraceus_herbiguide.pdfIn PDF document text
    • https://cdn.sqhk.co/fosulavale/ygh2Vjh/51741084127.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471240/normal_6047c0fabad43.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393752/normal_6029dbaf53e0f.pdfIn PDF document text
    • https://cdn.sqhk.co/posebozej/ijidifw/simple_man_keyboard_notes.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://palibam.atwebpages.com/the_fifth_wave_book_3.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00020144.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20144 5400 bytes
SHA-256: 6413ce82e9ad065f8a6f3b185d58813e60cbbd7355b97a86f28cc06f6aa39199
font_01_sfnt_off000213b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x213B6 13084 bytes
SHA-256: c08bfc12b24c84e8d28f7b309c335b4361e7c8a3138205195b7269c12ace78ea
font_02_sfnt_off00023e2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23E2A 16772 bytes
SHA-256: 4bbc0f9921d1405f4bada567521eeae8ed7685d346ae21b8af8b8fd385e19a8d

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