Malicious PDF — malware analysis report

Static analysis result for SHA-256 b429b68f512e293c…

MALICIOUS

PDF

81.3 KB Created: 2021-03-17 22:49:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ec127b23a1ab496e7ca91423e180cac4 SHA-1: 29b11ca782d69e65f87c1e463be04477ff91fdd6 SHA-256: b429b68f512e293c1bf9b31c3d0e3bca2f6c773203c3f04e7d42181a3a5d22a8
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a machine learning classifier and ClamAV, as malicious and likely phishing-related. It contains an embedded URI pointing to 'bologen.ru', which is likely part of a phishing campaign to trick users into visiting a malicious site. The PDF structure and embedded content suggest it's designed to exploit user curiosity or a perceived need for information, leading them to a potentially harmful external resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/wix?keyword=dong+tu+bat+quy+tac+cua+lose
    • http://vixegoxufareka.getenjoyment.net/excel_formulas_with_example_2020_download_free.pdf
    • http://kixurox.getenjoyment.net/sanyo_dp26640_specs.pdf
    • https://cdn.sqhk.co/wedowetaso/ihjdjby/best_friend_friendship_test.pdf
    • https://cdn.sqhk.co/gogojelawov/hChajgs/97436055022.pdf
    • http://pifafuvutote.iblogger.org/91475881862.pdf
    • http://xivekoto.medianewsonline.com/61930875456.pdf
    • https://cdn.sqhk.co/wogefosa/OVjiOfP/fun_facts_about_spain_for_kids.pdf
    • http://pefiworawodud.mypressonline.com/how_do_you_self_clean_a_kenmore_oven.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://f7cac2f2-528f-490f-9bef-cb2448a877de.filesusr.com/ugd/529ba0_d9b1b988b8d84ac38b21f61113afc3fc.pdf?index=true
    • http://nenilezum.epizy.com/59931263102.pdf
    • http://xakosafejel.epizy.com/arab_health_post_show_report.pdf
    • https://s3.amazonaws.com/rujabepifar/puxepuxobu.pdf
    • https://814cba0f-f649-4223-bfe6-7884e6e02b9d.filesusr.com/ugd/c1108c_e9a2b238461a4e84888f6808fa8d476c.pdf?index=true
    • https://s3.amazonaws.com/levumoduf/worksheet_about_countries_and_nationalities.pdf
    • http://busanex.rf.gd/95914806869.pdf
    • http://bigamutalunu.atwebpages.com/jonomonapoponu.pdf
    • http://fisetefukuwod.rf.gd/vuvogiguxa.pdf
    • https://s3.amazonaws.com/fevobelijogal/tolotunolofigekuxufijanog.pdf
    • https://bbaef297-c986-4b42-acb3-0fd65605e280.filesusr.com/ugd/e9fc71_54cf1012aa0c4dbfbb2dd76a2592029d.pdf?index=true
    • https://1261df91-4e32-40b2-8b8a-4050d3c54cbb.filesusr.com/ugd/df69c1_f231ccb4be8147f79dd18521337d31ae.pdf?index=true
    • https://s3.amazonaws.com/fogibi/dudepomijumovosoxumum.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_off0000f22f.bin
7a9deb3194c3b0db71e81c8d08013a8870b12b089078775017c1739823219408		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF22F 5240 bytes
font_01_sfnt_off00010425.bin
19651779feeb47182c0f6bd0bdaeceacfd211833aa30c828b7080ce0c389df70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10425 22068 bytes

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