Malicious PDF — malware analysis report

Static analysis result for SHA-256 84aa4dbcf63fed67…

MALICIOUS

PDF

74.0 KB Created: 2020-11-25 15:44:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 880ced58b8f41da0ef443c48fe3f2ca7 SHA-1: 70780021e53665e71ec3f25da2f24e3dd0e7594c SHA-256: 84aa4dbcf63fed67d47c3b2571fd0d6815f47d9bec309656542ad891cf3fd7a6
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'traffmen.ru'. This URL is likely used to lure users to a phishing or malware distribution site. The ML classifier also strongly flagged this PDF as malicious. While no scripts were extracted, the presence of a malicious URL within the document structure indicates an attempt to trick the user into navigating to a harmful destination.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffmen.ru/aws?utm_term=tower+of+saviors+level+up+guide In PDF document text
    • https://majemuxisirilud.weebly.com/uploads/1/3/4/7/134719568/nawubolo_puworovopej_fujanuf_lematen.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391340/normal_5f9004c2e79ef.pdfIn PDF document text
    • https://dugitesabisaxo.weebly.com/uploads/1/3/4/3/134392589/gafuxifalaju.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411490/normal_5f979420e2790.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368243/normal_5f8b4489c2972.pdfIn PDF document text
    • https://nijubalalo.weebly.com/uploads/1/3/1/4/131453980/9851903.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391893/normal_5f9894d24fe59.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f435c76-4125-4b8c-8299-b0a92d886851/fall_word_scramble_with_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5e796de-ed61-4885-bdad-e5965bc0c4a8/ark_shock_darts.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/classification_des_actinomycetes.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/how_many_beats_is_a_eighth_note.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00ddfede-10f8-419a-b4ea-64223856683a/dragon_ball_z_budokai_tenkaichi_3_iso_ppsspp_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6fd18cb-ae1e-4a0a-89f5-8184e0cceddc/vuvof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a8df325a-f471-4c2f-ba0c-01bb8ae8f89d/77174408466.pdfIn PDF document text
    • https://s3.amazonaws.com/bubeto/isms_auditing_guideline_v2.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_off0000e341.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE341 5312 bytes
SHA-256: fef532845522e417f5ec9d62476eb235f450186628a2757abaca5e5be9064ddf
font_01_sfnt_off0000f579.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF579 11020 bytes
SHA-256: e9b8b557c67678bc3c35fa11ad04b49eca4921a88b88ee927c5567b90720a2c2

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