Malicious PDF — malware analysis report

Static analysis result for SHA-256 870f1c5c1c73e110…

MALICIOUS

PDF

74.2 KB Created: 2021-04-02 09:06:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b0ac0b2a2a13b0ba3f0e94913db54000 SHA-1: 8f2e6b911c3169bc6f366e3b2ada0a0674a82e8e SHA-256: 870f1c5c1c73e1104d6b7d5d14cd88fad538f36cbddeae4d5515a37b80be9eaa
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://gimoguvi.ru/wix?keyword=ez+battery+reconditioning+pdf+free+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4446931/normal_60286d29a0444.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388405/normal_6047af5ab7144.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476765/normal_604f78f17ba9d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416919/normal_5fdabd805f019.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404122/normal_605ab733982da.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366367/normal_5fe44c5bb3a63.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449187/normal_603e8d1ed5415.pdfIn PDF document text
    • http://kidufamipowanot.mywebcommunity.org/american_food_list.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451210/normal_5fddd1bed450f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367621/normal_6039fc4abd15e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455194/normal_603d73e11936b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388062/normal_5fce04f059875.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490539/normal_6008ceae5507b.pdfIn PDF document text
    • http://nariwunuzaw.scienceontheweb.net/jojexoj.pdfIn PDF document text
    • http://rotosararazazi.22web.org/the_stand_1994_miniseries_cast.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/zumokin.pdfIn PDF document text
    • https://s3.amazonaws.com/gekojulog/a_scanner_darkly_streaming_eng.pdfIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/free_math_worksheets_dividing_decimals.pdfIn PDF document text
    • http://vuruwabudakase.epizy.com/suweripivadoja.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e246.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE246 5488 bytes
SHA-256: 629d5256e85c611e09a42d17af2026116b5c5ba975b08de6ddee4e8f9e9a88a4
font_01_sfnt_off0000f526.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF526 11472 bytes
SHA-256: 3ed42d772ad81e44aab50a091e69a35633a2f04c55ab4ddeb6b606590d1b3fdb

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