Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2b6d11577b30887…

MALICIOUS

PDF

78.8 KB Created: 2021-05-04 01:49:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aedce830d097a00fcfd9bddd71422358 SHA-1: 759690c12d6669c7c897fedc41fec35702cb8c51 SHA-256: e2b6d11577b30887802adc1aa819f5e214bbb9a52f159b6612853bfccbdec5b1
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics as malicious, including a critical detection for a link farm and a high-confidence ML classification. It contains numerous external links, with a primary focus on https://seumenha.ru/strik, suggesting an attempt to redirect users to malicious content. The PDF structure and link farm heuristic indicate a likely phishing or malware distribution attempt, possibly exploiting PDF vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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
  • 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://seumenha.ru/strik?utm_term=self-reliance+outfitters+bushcraft+knife+making+kit
    • https://fewegako.weebly.com/uploads/1/3/1/4/131453302/bosotisolagak.pdf
    • https://cdn-cms.f-static.net/uploads/4483602/normal_603881c9ea379.pdf
    • https://zipakodexosif.weebly.com/uploads/1/3/5/3/135344546/pezarajolu.pdf
    • https://cdn-cms.f-static.net/uploads/4489716/normal_602c0b45ea0c2.pdf
    • https://dogiwubof.weebly.com/uploads/1/3/4/4/134400908/befevagejogeva.pdf
    • https://tebizojejifijof.weebly.com/uploads/1/3/4/5/134589629/xowepu.pdf
    • https://wakabidodez.weebly.com/uploads/1/3/4/6/134632857/tejesizo-baduzolu-wufofeniwej-rogululedar.pdf
    • https://cdn.sqhk.co/denugesugumu/ib3tnv3/mandalorian_helmet_template_foam.pdf
    • https://cdn.sqhk.co/musosesuguju/TuGjgje/believe_polar_express_sheet_music_trumpet.pdf
    • https://cdn.sqhk.co/roxigeve/iqZ3xvJ/based_on_kpa_audio.pdf
    • https://static.s123-cdn-static.com/uploads/4420906/normal_5fe17a8f9a259.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://299bc67c-4c9a-44ea-852c-18f2d39dca40.filesusr.com/ugd/954c8b_fb30beb6e65b4d0f9b233edbc9650d37.pdf?index=true
    • https://uploads.strikinglycdn.com/files/a0fd50d5-63d8-4545-8d7d-16ae62b87aeb/wonder_novel_worksheets.pdf
    • https://s3.amazonaws.com/jolozidabi/old_school_music_player_name.pdf
    • https://s3.amazonaws.com/zedudo/rawhide_harley_service_department.pdf
    • https://s3.amazonaws.com/tesotiwapax/64437734466.pdf
    • https://s3.amazonaws.com/nezanurugega/notitif.pdf
    • https://s3.amazonaws.com/pulavokaxe/sweet_candy_camera_app.pdf
    • https://uploads.strikinglycdn.com/files/2b49e738-b384-45dd-98e1-fa797ffb4bad/59415944553.pdf
    • https://uploads.strikinglycdn.com/files/87f1cf4f-928f-48d6-a1c1-23cb9f70fbf1/what_is_the_best_selfie_stick_for_iphone_6.pdf
    • https://5e9816b5-e261-4a84-a5c7-594b6999e1c8.filesusr.com/ugd/eb2f7d_5beac2e1d9c44855bda823a0b71ef57e.pdf?index=true
    • https://uploads.strikinglycdn.com/files/21e856f3-10b7-4268-9f2c-fe33c2dd7805/how_long_can_someone_be_on_paid_administrative_leave.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3c3.bin
8ec93e401483d25c9131d982e89078ba6d114f3df47fdcc23b945098e3d543ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3C3 5636 bytes
font_01_sfnt_off000106c7.bin
e18c6b54058a55d570599693693d3d217a7a22e9c38e6ec78088aed31d831c12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x106C7 11220 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.