Malicious PDF — malware analysis report

Static analysis result for SHA-256 698f0809bdfbf01d…

MALICIOUS

PDF

76.6 KB Created: 2020-11-26 22:44:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 66a19a48f95ed3763daeb15b76a2d871 SHA-1: 15cc0e59ac19a24fef3b660ca7befa32e1d29aa5 SHA-256: 698f0809bdfbf01dac85c4c07f27ce937e4cfd6f55659b6f10c59af52be3e13f
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 spam or phishing campaigns. The primary URL, https://trafftec.ru/strik?utm_term=tanks+trouble+2+unblocked, suggests a lure related to a game, likely to drive traffic to a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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=tanks+trouble+2+unblocked PDF link annotation
    • https://gujidasudaximuv.weebly.com/uploads/1/3/4/3/134384457/4676003.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403407/normal_5f9693306d65d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480876/normal_5fb9e0c56bc07.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413227/normal_5f996bba5c7d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368235/normal_5f882ec40f3a8.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/313066b2-c135-4aac-8e53-88e874aba97f/57029363713.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/kajal.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/okcupid_disable_account_payment.pdfIn PDF document text
    • https://s3.amazonaws.com/jivala/bonifonedoba.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/hdmi_to_micro_usb_type_c.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c111564e-3ab2-4f61-a98b-13103e9d6807/32162429219.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd5f2f7d-c6c2-459f-8d98-e73df01dfe92/jitukidukawemuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5d84560-907d-4375-b98c-062513c88ec4/ratatouille_online_free_stream.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3bfe085a-b3a5-4072-af62-5e0892f8c2e8/99863860409.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c163.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC163 10580 bytes
SHA-256: 662a6083eceaa1e587e6bff1055e16a5cd6cf7a080e5a467002916764f7a7c0c
font_01_sfnt_off0000e44b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE44B 5216 bytes
SHA-256: d8cbd8b0a51f21e9b1a40c585d27d54a019ef31ce99968f5613987c059d0526c
font_02_sfnt_off0000f60b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF60B 1688 bytes
SHA-256: 9d2b638c5dd3cd3f7096e9cc6f94348a381c44cbe5b9997df3af4c9865379b90
font_03_sfnt_off0000fe78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE78 11436 bytes
SHA-256: b5a7c38a637009fe67200e8cd8fc37d1013b5107de0faa69c6eb846424033136

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