Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e2a4bb0629cbecf…

MALICIOUS

PDF

78.1 KB Created: 2020-12-29 17:42:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 9c92c05f0ed16480caf65c24827bc238 SHA-1: 87cd4c639ac537b4ca8a6a81817cb25f12762416 SHA-256: 3e2a4bb0629cbecff3461bec4e5abee69b099957c9e3c1e86f7df22383c9f264
154 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical alert for a malicious redirector link and a high-confidence ML classification. The embedded URL points to a known malicious redirector, indicating an attempt to lure the user to a harmful site. No scripts were extracted, but the presence of a malicious URL is sufficient evidence for a phishing or malware distribution attempt.

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://cctraff.ru/strik?utm_term=warhammer+40k+magic+schools In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368748/normal_5fdaaa1c2cdd5.pdfIn PDF document text
    • https://cdn.sqhk.co/tajiwikiter/Rwyibgd/amazon_selling_fees_too_high.pdfIn PDF document text
    • https://cdn.sqhk.co/vuxesojogugu/heLFCpv/diastasis_recti_surgery_cost.pdfIn PDF document text
    • https://cdn.sqhk.co/diratukuz/aNq6jcV/ice_hockey_rink_dimensions_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/besawevij/ZQDmgg5/mutonekofasasegupop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465267/normal_5fb93dbfb4a1c.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/27155734-c8f6-43b9-8a89-dba00dd978a1/18khatrimaza_hollywood_movies_in_hindi_a_to_z_720p.pdfIn PDF document text
    • https://s3.amazonaws.com/garorowa/dream_interpretations_meanings_in_islam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c627672-7b99-423e-b79f-2cc8f849f574/nebarerufojevobosovo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9aee14f-ab40-4af3-8d13-707fe689d1bb/devoxavefasisetubikabe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5517b8ac-7fb0-4850-b9df-a33a5affec34/stairway_to_hell_location.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/fudalutukivezakape.pdfIn PDF document text
    • https://s3.amazonaws.com/baxadelefofibuz/rabutukivurijexazokemin.pdfIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/captain_crunch_crunchling_adventure_mac.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_off0000f3a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3A4 5520 bytes
SHA-256: f8e1f0928898abc5f5908ea45a6bb209596243e4d4ecfa280bc6d9a49327be44
font_01_sfnt_off00010655.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10655 10972 bytes
SHA-256: 44825e31f6c3edd5b3250899e2805c7e259b382d57173bba0f01e9efa35af9d7

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