Malicious PDF — malware analysis report

Static analysis result for SHA-256 b564e3311b9fda29…

MALICIOUS

PDF

79.3 KB Created: 2021-04-23 18:57:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ab292b058c4ccb4e2757ca7a672e008 SHA-1: b1df74f5474e9eea5292b397a82ced0096e9b534 SHA-256: b564e3311b9fda295a9d56b7fa01fd69442f57021ddbccfafafb795012961c1b
96 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 an embedded URI pointing to 'ponafet.ru', which is likely a malicious domain used for phishing or distributing further malware. The document body, though heavily obfuscated, appears to be related to a product search, reinforcing the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ponafet.ru/strik?utm_term=bose+solo+tv+sound+system+remote+control+replacement
    • https://cdn.sqhk.co/mipemoku/jxheMv7/screen_recorder_with_audio_iphone.pdf
    • http://hookup673.site/duduxilunopitif1hk0e.pdf
    • https://cdn.sqhk.co/tanemurad/bf7hege/54995919405.pdf
    • http://dvestideyli.xyz/31551742984j0wh9.pdf
    • https://cdn.sqhk.co/sixitigoxeto/ZDggKPg/87360194982.pdf
    • http://imm-shoes2.club/police_helicopter_simulator_mod_apkvpw67.pdf
    • https://cdn.sqhk.co/sovixojer/DBfjfjd/mobizen_mirroring_professional.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gofilafixu/is_instagram_reports_legit.pdf
    • http://kugibujupedo.rf.gd/767476684.pdf
    • https://s3.amazonaws.com/sajatesawodiji/2100688403.pdf
    • https://s3.amazonaws.com/rebesudanolo/constitutional_law_outline_barbri.pdf
    • https://s3.amazonaws.com/jixerubowi/business_environment_class_12_questions_and_answers.pdf
    • https://s3.amazonaws.com/nijudow/formal_resignation_letter_sample_australia.pdf
    • https://uploads.strikinglycdn.com/files/66e65b05-324e-42e5-89ad-2e24c7d4dc80/13754963611.pdf
    • https://uploads.strikinglycdn.com/files/c7310fdd-bde8-4a1f-8a73-04a39a8898cb/the_chrysalids_chapter_3-4_summary.pdf
    • http://vogepaxita.rf.gd/96292122886.pdf
    • https://s3.amazonaws.com/tixedujegibex/ielts_academic_task_2_vocabulary.pdf
    • http://renebizokav.epizy.com/linux_shell_scripting_tutorial.pdf
    • https://s3.amazonaws.com/lijopavexanuse/20523260862.pdf
    • https://uploads.strikinglycdn.com/files/3d4b0560-c609-4ce3-8d64-71891d89138b/basic_computer_tutorial_for_beginners_ppt.pdf
    • http://selafaveso.rf.gd/72878611543.pdf
    • http://sapumazolexu.epizy.com/spider_man_2099_1.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_off0000f4d6.bin
074c933b66f15c0e1983224c25cabff172830ec1385eb0bac766defc6ba50a45
pdf-font-stream PDF embedded font (sfnt) at offset 0xF4D6 5432 bytes
font_01_sfnt_off00010744.bin
a688da52768226b3fe4d5972fa6565e0a5c66ed308f3292195a8955133793e04
pdf-font-stream PDF embedded font (sfnt) at offset 0x10744 11824 bytes