Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe7e2b7f3b84d12b…

MALICIOUS

PDF

43.7 KB Created: 2020-11-08 06:27:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: ef3816c6fc1a3284381256cd3446061c SHA-1: 1bc62fd88b90d9715ab388769547bb39a1e747fe SHA-256: fe7e2b7f3b84d12be7eab184b61b0040abc267412e769b82f12ac1fb2226ae22
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, 'https://traffine.ru/123?keyword=nec+2020+code+pdf', is the primary indicator of this malicious activity. While no scripts were extracted, the presence of a malicious link strongly suggests a phishing or redirection attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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://traffine.ru/123?keyword=nec+2020+code+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4418762/normal_5f9919142b171.pdfIn PDF document text
    • https://dujopoda.weebly.com/uploads/1/3/0/7/130739119/6097020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390641/normal_5fa2161a408e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383698/normal_5f99f01a47877.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386836/normal_5f96d873a03d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369769/normal_5f985da8f097d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xapidajovaji/free_cursive_handwriting_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/nagev/camilo_cienfuegos.pdfIn PDF document text
    • https://rukawakoxofo.files.wordpress.com/2020/11/2020_nfl_season_schedule.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/banagovos.pdfIn PDF document text
    • https://kebupud.files.wordpress.com/2020/11/16674380217.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/tuwutitekazoxetulel.pdfIn PDF document text
    • https://s3.amazonaws.com/naxizugenabi/86907239033.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006230.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6230 4876 bytes
SHA-256: 864eb86298727e9795c036fe9af08642ae98b5b7466afc18ee89b43b23aafb5d
font_01_sfnt_off000072ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72EF 3720 bytes
SHA-256: 6539b129c5cd894636dc8f40f53a156c00c8f46378ab4f137c96d687a1cff6ed
font_02_sfnt_off00007e52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E52 10520 bytes
SHA-256: 73b4efe9b1551c165602282c1cb8c14c577cb01521591b7a98d31c4f2444e321

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