Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e16aa56e62ceb78…

MALICIOUS

PDF

81.1 KB Created: 2021-03-04 01:27:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 6d3331a57b7beb7e3b09ab10a13dde90 SHA-1: 5bacccdd634cc4ba8237acc63c28756275a3b1c0 SHA-256: 2e16aa56e62ceb78da97e037d00ccdf62ff563c51c90aecb7f5cefbbf166c00e
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'baarspo.ru', which is likely part of a phishing or malware distribution scheme. Although no scripts were extracted, the presence of the malicious URL and the document's deceptive title suggest an attempt to trick the user into visiting a harmful 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://baarspo.ru/award?keyword=how+many+wonders+did+god+perform PDF link annotation
    • http://premiumpornclips.com/poguzovipiwewiwiww28e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501231/normal_60181026de01d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391915/normal_602fa8756c7ea.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382201/normal_5fdf21233f307.pdfIn PDF document text
    • https://cdn.sqhk.co/nobutowug/iii81Xk/37216334754.pdfIn PDF document text
    • http://wei-nmvc.com/sundance_optima_spak1q2v.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455375/normal_5ffb863201bbb.pdfIn PDF document text
    • http://zarabotok.space/bitdefender_free_vpn_androidojcy0.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/daniwodug/fatij.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/nowotuzokebavetonovew.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/vubibonutokubimisejapab.pdfIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/breakout_edu_answers_get_me_home.pdfIn PDF document text
    • https://s3.amazonaws.com/papuja/57537893360.pdfIn PDF document text
    • https://s3.amazonaws.com/tidigudetefumof/24668849384.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/outlook_email_template_size.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dca8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCA8 5484 bytes
SHA-256: 94358375a1bbaff737a56e8d42f322c57d4bd42de4e2ce0f307d5f8ec59d40dc
font_01_sfnt_off0000ef4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF4F 16304 bytes
SHA-256: 3ffabd541de21fd656e190cf6f0b5f0c9d0437325b35e69585d1f66456fcd7ca
font_02_sfnt_off0001223a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1223A 16112 bytes
SHA-256: 04c641d0aedeaa8c494855f42a2e9ae6fad9e3679126e7dc5c08fccc4b41c292

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