Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cc10675e8a55852…

MALICIOUS

PDF

68.6 KB Created: 2020-12-03 05:30:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45a58feaece4be19e11074ec47226041 SHA-1: d342a9381455ae3b9322df99af511bb4a238fb4b SHA-256: 5cc10675e8a55852a2b07ead868e0cb4cfe4088bd500dd52c5711764f277baf7
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for SEO link farms and phishing lures. The primary malicious URL, traffking.ru, is likely intended to redirect users to a phishing or malware distribution site. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/123?utm_term=google+calendar+weather+change+location
    • https://bilewazivabo.weebly.com/uploads/1/3/2/8/132816117/xufoti.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/7b360e15-2717-4276-a7cb-1f41bad4eef9/60773636260.pdf
    • https://uploads.strikinglycdn.com/files/90a29d65-9677-4a00-ac19-d44d89f9a98e/rojunojepaluboguruseb.pdf
    • https://uploads.strikinglycdn.com/files/293f5f60-6a0e-4ecf-9f5d-d08da7270931/iata_book.pdf
    • https://uploads.strikinglycdn.com/files/c4baec73-3d3a-4e47-934a-5da34c4d727d/32097534094.pdf
    • https://uploads.strikinglycdn.com/files/8dc58370-b345-400e-8d0f-fbcabc8720ad/segogigevegen.pdf
    • https://uploads.strikinglycdn.com/files/c8347a40-2843-46b0-8f9c-f0ed7201dec1/bear_garden_mobile_home_park_capon_bridge_wv.pdf
    • https://uploads.strikinglycdn.com/files/3a86b1c8-04d6-418a-9f98-a92a4d73a0dc/ximabaditolapololi.pdf
    • https://uploads.strikinglycdn.com/files/b7270f1a-fa2a-4af4-8a26-e38bd58df332/dark_mission_the_secret_history_of_nasa.pdf
    • https://uploads.strikinglycdn.com/files/d937faa5-4ab0-497c-9a64-999d013b8b8f/56590093424.pdf
    • https://uploads.strikinglycdn.com/files/f0dc09d9-a180-447d-b8cd-0d830cba5e2d/71180460620.pdf
    • https://uploads.strikinglycdn.com/files/bf37581d-2b91-465e-bde5-7a149a458b17/dekubizinupeg.pdf
    • https://uploads.strikinglycdn.com/files/1b559c07-b317-40ba-8153-aaebfdd9e9c5/ay_que_lastima_in_english.pdf
    • https://uploads.strikinglycdn.com/files/3dd5dfbc-5dca-4c15-98f8-938f22d0bb80/xujudulasalobom.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d136.bin
5d6b4b6f38b4066eecb0c482c4c6f09ae0b3ac18dfa3adbd8f6e724b1cedfdd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD136 5148 bytes
font_01_sfnt_off0000e2c6.bin
cacb54bd8e37b4054d430a81884b3ca4476aa6539f8ee80c0f270646b1b9ffbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE2C6 10040 bytes

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