Malicious PDF — malware analysis report

Static analysis result for SHA-256 e36fc0659b614704…

MALICIOUS

PDF

67.4 KB Created: 2020-11-14 00:59:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 6faa32df368fd1a179b939000e5c87a0 SHA-1: bd20e577ac4d38aee018c2b0e65561a16e12db17 SHA-256: e36fc0659b614704960371fd2a8bddcaf469df9f8ceb023c5c8be5c4acc0a83f
96 Risk Score

Malware Insights

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

The file is classified as malicious by ML and ClamAV, with heuristics indicating the presence of an external URI. The embedded URL, https://traffking.ru/123?utm_term=zero+gravity+chair+best+buy, is the primary indicator of a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and the malicious URL suggest an attempt to redirect the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffking.ru/123?utm_term=zero+gravity+chair+best+buy PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393190/normal_5fa2366fa734b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467285/normal_5faf0ba636fe0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427268/normal_5fae1f16c48fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420459/normal_5f9f3d282fa85.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421944/normal_5fad6e5635ef6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414848/normal_5fa3760af3084.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/wukevirenesu/47647216563.pdfIn PDF document text
    • https://s3.amazonaws.com/fojaxexino/18678586773.pdfIn PDF document text
    • https://s3.amazonaws.com/jimugivos/84771381523.pdfIn PDF document text
    • https://s3.amazonaws.com/runuzitexokol/how_to_mod_in_battlefront_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/potatoes_au_gratin_in_ninja_foodi.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/how_to_use_an_abacus_step_by_step.pdfIn PDF document text
    • https://s3.amazonaws.com/tezofuretejom/bekaj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89464e89-8adc-4889-bc9e-7241f640bfbf/charge_of_fluorine_ion.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_off0000cb7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB7E 5288 bytes
SHA-256: 55e6b09a00fe279b9fc10e6bdd5719ab5736af95385dd560506cbe6a08360f65
font_01_sfnt_off0000dd84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD84 10588 bytes
SHA-256: 5723852525c948224b3af04a79b727547106212889be12c03457aa1770013c29