Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b391696ea6558ac…

MALICIOUS

PDF

101.2 KB Created: 2021-03-21 23:09:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74caf1b9102b3ff91b67277651e705ad SHA-1: bff12b45b8d038a9558427fa8b8c80a13bb8cc70 SHA-256: 0b391696ea6558ac3ab58fb173966ef2496a05604f2f6a38dd3a1d43c9b93c14
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that masquerades as an instruction manual, a common lure for phishing attacks. ClamAV and ML classifiers strongly indicate maliciousness, with the PDF_URI heuristic pointing to a suspicious external URL. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics suggest the document is designed to redirect the user to a malicious site, likely for further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • 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://leonvi.ru/wix?keyword=wilson+and+fisher+sonoma+gazebo+instructions+manual
    • http://liberum.sportsontheweb.net/constructive_anatomy_george_brant_bridgman.pdf
    • http://memisada.mygamesonline.org/tutorialspoint_html_free_download.pdf
    • https://cdn.sqhk.co/xutazazo/xEhzwih/zombie_pirate_gunnery_mob_vs_handguns.pdf
    • https://cdn.sqhk.co/vedimurami/wnVhfl9/skyrim_dragonscale_boots_id.pdf
    • https://cdn.sqhk.co/xuwadezab/chghbZ1/51216804951.pdf
    • https://cdn-cms.f-static.net/uploads/4458413/normal_6029d96697440.pdf
    • https://cdn.sqhk.co/zopizote/6EZt6gf/rakebulip.pdf
    • http://nageramuvepom.mywebcommunity.org/sloan_flushmate_m-101-526-f3_keeps_running.pdf
    • http://russianpatentexpert.com/pdp_xbox_one_controller_chargerg8c7w.pdf
    • https://cdn.sqhk.co/xororasomig/wAidfr8/real_car_racing_3_game_mod_apk.pdf
    • https://static.s123-cdn-static.com/uploads/4425238/normal_5fc7c8345b801.pdf
    • http://prizinsta.site/how_much_does_it_cost_to_sue_someone_for_breach_of_contractt0qq6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/ligole/baxoke.pdf
    • https://s3.amazonaws.com/julaxel/pekoketevema.pdf
    • http://gifadapilara.epizy.com/how_to_reset_a_deep_freezer.pdf
    • http://wexereza.rf.gd/apc_smart_ups_5000_manual.pdf
    • http://fazafowunop.epizy.com/panotununozilino.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_off000121ef.bin
c116e10fb98146bf73825f9344cbaa4ab3496676eeec916de56f24fbb4bed7b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x121EF 3288 bytes
font_01_sfnt_off00012d81.bin
3770e9e89a8013779bfd0848c4b317ec826607188946c371b8b1608b52a76ae4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12D81 5640 bytes
font_02_sfnt_off0001409a.bin
0b898f5a9631b3efd7ba13cbc64300cc1996d16eb65dc5a01f5483eb7011745c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1409A 13792 bytes
font_03_sfnt_off00016f7a.bin
39b23639f7ae601ea74275cfd73646c8bc3de9a73e0c715d0c16c24b51a252e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16F7A 16588 bytes

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