Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f68cefdf91159d6…

MALICIOUS

PDF

1.03 MB Created: 2020-12-26 20:05:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 15db8d7bdc42a0c7c98005c6f2547b2c SHA-1: 9700b996de549eb2bcfc96fffdcd157083b827ea SHA-256: 2f68cefdf91159d600abc700e7cc03a6eeaeb9a2bb7240bd5995f94c8e4a8886
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by ClamAV and contains a critical heuristic firing for a PDF redirector link pointing to 'traffking.ru'. The document body, though heavily obfuscated, contains text fragments like 'Dearing report 1997 key skills' which likely serve as a lure. The presence of multiple embedded URLs suggests an attempt to direct the user to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4528

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/aws?utm_term=dearing+report+1997+key+skills In PDF document text
    • https://cdn.sqhk.co/kefesizo/Smgeygi/vimekififoseruzelugoket.pdfIn PDF document text
    • https://zifekibovaliw.weebly.com/uploads/1/3/1/8/131871714/2961674.pdfIn PDF document text
    • https://cdn.sqhk.co/nopawuwam/N9gi3hi/skyrim_dawnbreaker_retexture_mod.pdfIn PDF document text
    • https://lepabamun.weebly.com/uploads/1/3/1/6/131636917/42a491e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378606/normal_5f9ba2b33a695.pdfIn PDF document text
    • https://rabexowubomisuw.weebly.com/uploads/1/3/1/4/131407155/difidamanuzarozifud.pdfIn PDF document text
    • https://pudegubazamase.weebly.com/uploads/1/3/1/1/131163945/kanet.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416802/normal_5fc4982cc41f6.pdfIn PDF document text
    • https://cdn.sqhk.co/mokavokaven/iuiaiiB/70594252444.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383918/normal_5f95a8f9b5d44.pdfIn PDF document text
    • https://mawanegofarate.weebly.com/uploads/1/3/4/4/134466522/4952043.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448540/normal_5fe6ee19cbcb2.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/159e09b6-d745-4a07-9607-8faec2d81e7e/lobatotovegimazevitefatez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f30af98f-eaab-4ca5-b173-b6d37b307f46/vidaxawuwasof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/818589f9-ce74-4bd8-b1cb-dda0d78024ed/domolave.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec7048a7-4bac-44c3-8859-786b1f5460bc/dragon_ball_z_vs_kai_episodes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e18b7ac-501f-4a48-a83e-73d6b282fd32/97267006053.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000ff537.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF537 15500 bytes
SHA-256: cb24b271e61ef66988abee223d8f2b76de59825757a7e84de7bd724a7b10b0cd
font_01_sfnt_off00102710.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102710 5440 bytes
SHA-256: f666bf742534261258ba2aeb6b5915a18ebd24d82b4a76e50496d004c7bad2ad
font_02_sfnt_off001039cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1039CF 11792 bytes
SHA-256: c1420dce90cc7da22be58c34254c4efe41908afc82a09e44c2622a96388c6074

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