Malicious PDF — malware analysis report

Static analysis result for SHA-256 46b21d2c130e6083…

MALICIOUS

PDF

80.4 KB Created: 2021-01-01 04:03:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ebb5ebad74d3a2661762d1113b24342 SHA-1: d0b8b954d47731324df9c7ed4ce360d92a2726f9 SHA-256: 46b21d2c130e60837fdc919cbe38a7087ebdf55af99fe4e75416dbc6409cf7ed
214 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of embedded links, with one specifically identified as a redirector to malicious infrastructure. The presence of numerous links suggests an attempt to lure users to external sites, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • 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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffmen.ru/strik?utm_term=idling+to+rule+the+gods+guide
    • https://cdn-cms.f-static.net/uploads/4450003/normal_5fe6245ea0ab4.pdf
    • https://kunubukom.weebly.com/uploads/1/3/4/5/134599245/sajuposazijif-vibujekenur-zopujigid-gidesililiwolux.pdf
    • https://cdn.sqhk.co/ribovonubod/ic5GGjb/dvdrum_ultimate_drum_simulator_free_download.pdf
    • https://static.s123-cdn-static.com/uploads/4404124/normal_5fc7701133d8c.pdf
    • https://bejazono.weebly.com/uploads/1/3/5/3/135315558/jedonu.pdf
    • https://buximinolid.weebly.com/uploads/1/3/1/3/131381316/rutelovamuduwarot.pdf
    • https://static.s123-cdn-static.com/uploads/4455658/normal_5fc524c862df3.pdf
    • https://cdn-cms.f-static.net/uploads/4409114/normal_5f93430daf3d0.pdf
    • https://xoraxabaxid.weebly.com/uploads/1/3/2/6/132682630/gekugetuwexujosewumo.pdf
    • https://cdn-cms.f-static.net/uploads/4471509/normal_5fe786831b86e.pdf
    • https://nojinogexosop.weebly.com/uploads/1/3/4/6/134695112/kudawojedu-lewexopawazeje-gugonewalopumab.pdf
    • https://cdn.sqhk.co/relulapezele/gibGwgi/sejokifoxav.pdf
    • https://wigobozigor.weebly.com/uploads/1/3/5/3/135345973/3962c556.pdf
    • https://cdn-cms.f-static.net/uploads/4491437/normal_5fb4915c81b75.pdf
    • https://static.s123-cdn-static.com/uploads/4387821/normal_5fc555820ce82.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/0409d27f-40a5-4d91-adf7-64d7a3999b01/bowling_shot_names.pdf
    • https://uploads.strikinglycdn.com/files/24554cf2-0056-4987-bf55-154e7c32ecd9/cobra_cx210_manual.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db25.bin
e2047eff35532e56bf5beb6f742a1502a66e7c59b7d1a410ab99c5178a490ebb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB25 4696 bytes
font_01_sfnt_off0000eb04.bin
ba7b3f80777352842f0ee6b6414a37519f191fccbf2e11163f8bbfacbe026a9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB04 10840 bytes
font_02_sfnt_off00011063.bin
15128285344048d76b584a6587ab2ccb2c75eee889948d4c665368cae9e92c8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11063 16296 bytes
font_03_sfnt_off000125e0.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x125E0 4324 bytes

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