Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdded45624b367b6…

MALICIOUS

PDF

67.2 KB Created: 2020-12-19 03:02:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: a605d7ebc42daeb09d009650ef4dc674 SHA-1: 7adddf778791638b79341d6c0d74f1eea3d49aea SHA-256: fdded45624b367b63e633f72f85df0c7d1fc66ab74c09398f01828c910529190
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The primary malicious URL identified is traffking.ru. While no scripts were explicitly extracted, the PDF structure and the nature of the redirector suggest an attempt to lure the user to a malicious site, likely for phishing or to download a secondary payload.

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=kingsford+middle+school+powerschool In PDF document text
    • https://static.s123-cdn-static.com/uploads/4476767/normal_5fc812875f20d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374178/normal_5fad6838b4a35.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367004/normal_5f8ddf1d7625c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488323/normal_5fc1e79a35c2f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478923/normal_5fa8aa8ed4c2b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416796/normal_5fb2c7a49307a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365598/normal_5f8b80b58be26.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385648/normal_5fac1439f24f9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc4d024a87939686421378a/t/5fcaa56c6ab1a7206dba0b0c/1607116142955/50710055288.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/vuxizilodokibaromapuberi.pdfIn PDF document text
    • https://s3.amazonaws.com/rowubunak/anatomy_of_foot_and_ankle.pdfIn PDF document text
    • https://s3.amazonaws.com/petikamov/bayou_fitness_total_trainer_dlx_iii_home_gym_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/066f4422-46fe-426a-b514-bfe40ab2690e/kung_fu_panda_3_mp4_hd_movie_free_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d6092e537a05ef08bc6e/t/5fccc4b02fa8bc6bcde6ab9c/1607255217387/word_family_definition_and_examples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22e11e2a-15a6-4f2b-a2ed-1decb8274e53/20869036524.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/compaction_and_cementation.pdfIn PDF document text
    • https://s3.amazonaws.com/ladojenefe/watch_burlesque_online_free_no_sign_up.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_off0000cb24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB24 5420 bytes
SHA-256: bca4bd8211f3bd69ff4e285fb19d80631d8a62e3257e64607addc63b60797857
font_01_sfnt_off0000dd87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD87 10124 bytes
SHA-256: 20a331f57a2cab92d22dfcfaa7001c9a9841d6f8e371e346adce3e23c65a1eb3

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