Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd3b2693b7d74f0b…

MALICIOUS

PDF

80.0 KB Created: 2020-12-29 23:47:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: ff6e80faa643e99ea35f8cd3c70e4a74 SHA-1: d05063c1df52d9327c5d448fd76881943a68c034 SHA-256: bd3b2693b7d74f0b30f1a97c97c2beacbe9b929308244f5f7d5f56c0f542552d
154 Risk Score

Malware Insights

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

The PDF document was flagged by multiple heuristics as malicious, including a critical alert for linking to known malicious redirector infrastructure. The primary malicious IOC is the URL pointing to traffking.ru, which is likely part of a phishing or malware distribution chain. No scripts were extracted, but the presence of a malicious link strongly suggests an attempt to lure the user to 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
  • 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://traffking.ru/strik?utm_term=%25D1%2581%25D0%25BA%25D0%25B0%25D1%2587%25D0%25B0%25D1%2582%25D1%258C+%25D0%25B2%25D0%25B7%25D0%25BB%25D0%25BE%25D0%25BC+paladinz+champions+of+might In PDF document text
    • https://cdn-cms.f-static.net/uploads/4378160/normal_5fba8a961ce34.pdfIn PDF document text
    • https://cdn.sqhk.co/sojetaji/jgjhZJ2/49246300958.pdfIn PDF document text
    • https://cdn.sqhk.co/xufatirumina/hhvuigz/you_had_me_hello_lyrics_olivia_holt.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/vawoginele/hiring_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/setaxilitozuko/collect_data_from_multiple_worksheets_in_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/vuterijoze/17208845279.pdfIn PDF document text
    • https://s3.amazonaws.com/wibadinavosunom/la_times_crossword_answers_9_4_19.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/riesgos_psicosociales_en_adolescentes.pdfIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/gangster_spongebob_images.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/penetogezekupozuxosejenir.pdfIn PDF document text
    • https://s3.amazonaws.com/makumapikeze/disney_song_lyrics_quiz_and_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45f602ea-d699-434c-ad3b-b8869e9d2d92/pebetawepiratu.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/evolutionary_arms_race_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/dukavunivifa/64088541430.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/kovorumulomug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc9c4bb9-b79e-4676-85ea-6e84f6b6461b/27226380403.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_off0000ea00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA00 6656 bytes
SHA-256: b397594c2b8e0c8aea162d25d70289043021bfb5e327ee439c002e4d64bb9bb3
font_01_sfnt_off0000ff6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF6F 15696 bytes
SHA-256: 5c0f1023e44c6395873f91776d42dfd14e511579c588467fcb522ec4dfff8cb7

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