Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6231b9030bfd72c…

MALICIOUS

PDF

71.2 KB Created: 2021-02-22 09:30:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 7cc60fd5b6723eeddfb9ab49ad17043f SHA-1: 38c479fecefce62d6a4265a9b159aa985b505d8c SHA-256: c6231b9030bfd72c8227ae5e8cfa3f63b51a099faea90793e3b35d00f6e69339
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 0.9998

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://bologen.ru/123?utm_term=chemistry+chapter+12+stoichiometry+test+b+answers PDF link annotation
    • http://kuwixuxukaf.iblogger.org/rijopabidisazitewib.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417830/normal_60312e95d65eb.pdfIn PDF document text
    • http://freefire-gifts.com/29822431672e8e7p.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475196/normal_60311780be469.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375340/normal_603319fcd6c19.pdfIn PDF document text
    • https://cdn.sqhk.co/zubavagi/6jtEh2J/9467124003.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393489/normal_60013a96200e1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491451/normal_5ffc1a78130fd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413462/normal_5fcbf6d890386.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369486/normal_5feeaef73fc1d.pdfIn PDF document text
    • http://gufutaca3.xyz/netgear_dgn2200_manual_greekklpnf.pdfIn PDF document text
    • http://bupro.asia/world_cup_2018_results_cricketji059.pdfIn PDF document text
    • http://detonic-deutschland.website/add_assets_folder_android_studioq27qg.pdfIn PDF document text
    • http://gozatelaji.22web.org/video_trimmer_free_for_windows_7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501509/normal_5febde64a82e5.pdfIn PDF document text
    • http://rezltml.xyz/49571317363mcukn.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://parisexubuvi.rf.gd/92034016991.pdfIn PDF document text
    • http://lijazujarakowom.epizy.com/39924963781.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cafc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAFC 5472 bytes
SHA-256: 561103db72096be5bac346942e85f165bdf6d78cf4ce10a5d24305d3ff5894b6
font_01_sfnt_off0000dd80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD80 10440 bytes
SHA-256: c2da23e682e2ec6b9dd7f455c2c5eb3b9396550561838a9fe7d51432a6fd0633
font_02_sfnt_off00010157.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10157 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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