Malicious PDF — malware analysis report

Static analysis result for SHA-256 92c8d0690ea82e79…

MALICIOUS

PDF

80.7 KB Created: 2020-11-27 18:41:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 4f5b53f8fd5374c3cd859d78414332ee SHA-1: bfe5d14a2ec05d793aafb39992e6ed0896e96bf7 SHA-256: 92c8d0690ea82e7923cb9fc03d0b8c3e345acfb2505e8e2def337a8f5f0e8da8
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 phishing or distributing further malware. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of links, with one pointing to 'https://xoxazibazosilex.weebly.com/uploads/1/3/4/5/134590820/gowewimigogef.pdf'. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://trafftec.ru/strik?utm_term=kenmore+he3+washer+problems PDF link annotation
    • https://xoxazibazosilex.weebly.com/uploads/1/3/4/5/134590820/gowewimigogef.pdfIn PDF document text
    • https://putigazabikikim.weebly.com/uploads/1/3/2/6/132682718/738826.pdfIn PDF document text
    • https://gazesomudari.weebly.com/uploads/1/3/1/0/131070071/8984279.pdfIn PDF document text
    • https://zibefaxad.weebly.com/uploads/1/3/4/5/134594794/vidixasu.pdfIn PDF document text
    • https://rezivunafotete.weebly.com/uploads/1/3/4/3/134354631/dokuso.pdfIn PDF document text
    • https://wakutoji.weebly.com/uploads/1/3/4/3/134314583/1089524.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/74796619-d921-462c-8d95-be817b1d1afc/bikimaxusodetosomir.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawexawinogad/nejogexowom.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/map_of_magnimar_pathfinder.pdfIn PDF document text
    • https://s3.amazonaws.com/napoledunadigo/45746862676.pdfIn PDF document text
    • https://s3.amazonaws.com/rijedifatufod/tirowenoze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e89fd89-70a7-4f1e-a4fd-aee24a7428ef/41852828254.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/sobotilukojixu.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_off0000fbc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBC1 5424 bytes
SHA-256: 8d2629c554b5c8e1db4be913629d77136881597ebe01684b814527965496469a
font_01_sfnt_off00010e1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E1B 11516 bytes
SHA-256: af62db485527bc2b872b1ca5df5d42eecb2ab9793afe1474aaf17e628928473b

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