Malicious PDF — malware analysis report

Static analysis result for SHA-256 889680a9882f95e6…

MALICIOUS

PDF

62.9 KB Created: 2020-12-16 15:55:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: bca6a77e9034b0865a6a87427c2d2edf SHA-1: 15e60eb430392b786fc414df542b656b6d659b44 SHA-256: 889680a9882f95e65eca8c9d7a55d3ad410190056364f3f2515290004fe1a46f
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a primary focus on directing users to 'trafftec.ru'. This behavior, combined with ClamAV detection as 'Pdf.Phishing.Trojan', strongly suggests a phishing or malicious redirection attempt. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate it's designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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=iasb+framework+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369305/normal_5f9458f672a96.pdfIn PDF document text
    • https://votarozoxanobo.weebly.com/uploads/1/3/4/3/134315144/wavifuxu_fetaduz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454277/normal_5fd68cb0a60cb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453889/normal_5fc5b25e19526.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/5fc52fda8139af037661153e/t/5fd055a506d21916ed6aa7f7/1607488933520/business_management_major_colleges.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/caretaker_agreement_format.pdfIn PDF document text
    • https://s3.amazonaws.com/gosete/gekaxawasasud.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4eeaca5bc066edfbf657c/t/5fce7674de3c0658535fdfcd/1607366261805/ralphs_ice_cream_hightstown.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/faaf32ee-0747-4b95-93a7-0d29c5a4336e/dajigigikamof.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f975bf71053ccb109642/t/5fc3ea09fa04221c7198b706/1606674953372/rocky_mountain_christmas_cast_list.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7b973717a0f60c4053b44/t/5fc828aa6031f4738614bd6a/1606953130568/takeout_restaurants_open_near_me_on_easter.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/singh_is_bling_movie_3gp.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4d452bda9c57a97d752dd/t/5fcd08d4260a660a6bdf275d/1607272661293/37316557444.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/benakuwepiw.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_off0000baa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAA9 5388 bytes
SHA-256: 1cad8d7899b8faef06feeb780d7090aacc69413287d2d8a28c8d9887c1cb3826
font_01_sfnt_off0000ccf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCF8 10504 bytes
SHA-256: cdb3a1ab67ef23be942e55ef82a13a6be5e4465ba049e5c03aa16ab4e4c35bf4

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