Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b3206691209c89c…

MALICIOUS

PDF

76.0 KB Created: 2021-03-15 14:43:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4581b6d2a53c12e7f2eebc6453a744f3 SHA-1: 3ba79edffefe1f54c0e18c1c2ba8a3f8ce63bd80 SHA-256: 2b3206691209c89c59723200878fa2b3412792b86324b8a41dc82960c4ca2494
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with the heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicating a strategy to host many links on disposable domains. The primary malicious intent appears to be directing users to potentially harmful websites, aligning with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://botokaw.ru/wix?keyword=certs+mints+retsyn
    • http://eurozone.pro/how_much_to_rebuild_a_ford_302ubves.pdf
    • https://cdn.sqhk.co/puvubuzu/Dihjcgh/57107058806.pdf
    • https://cdn.sqhk.co/koxajavu/SjhjicE/tilasezafetiwowujuxuwibu.pdf
    • http://pirewarekow.mywebcommunity.org/lasawijosezidenuz.pdf
    • https://cdn.sqhk.co/wuvinudubuno/MY7jge7/blue_sky_girl_squadron.pdf
    • https://cdn-cms.f-static.net/uploads/4387817/normal_5fd77036eea52.pdf
    • https://static.s123-cdn-static.com/uploads/4393179/normal_5fef60448269b.pdf
    • http://xelasurugopu.mywebcommunity.org/79575616274.pdf
    • http://natnat.fun/gta_5_online_apk_download_for_androidapbew.pdf
    • https://static.s123-cdn-static.com/uploads/4379611/normal_6001694a3256b.pdf
    • https://static.s123-cdn-static.com/uploads/4393754/normal_5feddb662d7a7.pdf
    • http://suvolupijiro.mygamesonline.org/fibinorebub.pdf
    • https://cdn-cms.f-static.net/uploads/4416927/normal_601fcf0b427b3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/e12b0731-7165-4096-8456-74b094a72401/trigonometry_practice_questions_for_class_9.pdf
    • https://s3.amazonaws.com/toniseligiwuzux/acuerdo_comercial_mexico_japon.pdf
    • https://s3.amazonaws.com/legesiliv/jokujatufonopig.pdf
    • https://s3.amazonaws.com/vabedafozo/games_2018_apk.pdf
    • http://wolobugoxew.myartsonline.com/vabibulepotafede.pdf
    • https://uploads.strikinglycdn.com/files/b0919431-f9f6-4d63-bceb-3f60e6325b4e/xavinavididuresowomo.pdf
    • https://uploads.strikinglycdn.com/files/c2cb5845-3dad-47ae-a148-f20fe495283d/what_is_a_sensory_detail_for_grass.pdf
    • http://wavexijazibivat.myartsonline.com/vijafelikuve.pdf
    • https://uploads.strikinglycdn.com/files/cc7c663d-2871-416b-97c6-472ac2b8dd89/tableau_server_10.5_admin_guide.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_off0000eb71.bin
80499a43d362d5de254ce8ab6bdfdb9bf2e0b9be272e13afc886e1f381597202		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB71 4596 bytes
font_01_sfnt_off0000fb00.bin
4abd1ebc91f0a8f2e14bed47dd39defa90e7b8470a0e52e630da4af3127d17e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB00 11800 bytes

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