Malicious PDF — malware analysis report

Static analysis result for SHA-256 c43525094ac6823d…

MALICIOUS

PDF

81.6 KB Created: 2021-03-29 05:30:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93f1d90da5f2405902bdf847e31fa330 SHA-1: 911462881d13dde58e370ee4215184c5e35f6aa0 SHA-256: c43525094ac6823d1b07fc58a371d0dbacd8dc970493dcc776d8b1d4241c16a8
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URL pointing to a suspicious domain, likely intended to deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily corrupted, suggests a lure related to 'illusion of life pdf español'. No scripts were extracted, but the PDF structure itself likely exploits a vulnerability or uses embedded JavaScript to achieve its malicious objective.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://mezovuduw.ru/wix?keyword=illusion+of+life+pdf+espa%25C3%25B1ol
    • https://cdn.sqhk.co/sugutomipu/eii2Kog/mexutapolakadebakoke.pdf
    • http://zutolewe.mywebcommunity.org/56752657324.pdf
    • https://cdn.sqhk.co/moturalogupe/g9LXexH/guide_for_free_fire_coins_and_diamonds.pdf
    • https://static.s123-cdn-static.com/uploads/4393901/normal_5fcc8dfe2e97e.pdf
    • https://cdn.sqhk.co/worenora/hjhegd1/ikea_kitchen_cabinets_cost_uk.pdf
    • https://cdn.sqhk.co/zebimapajod/hgCgjk6/forbes_magazine_cover_october_2020.pdf
    • http://somixewavado.sportsontheweb.net/44072121569.pdf
    • https://cdn-cms.f-static.net/uploads/4464068/normal_5fd32422ad3cd.pdf
    • https://static.s123-cdn-static.com/uploads/4476593/normal_5ff2f22b6aa87.pdf
    • https://static.s123-cdn-static.com/uploads/4418747/normal_5fcf82e41e3ab.pdf
    • https://cdn.sqhk.co/gujuvizaja/heaXjgf/i_love_crosswords_2_level_4.pdf
    • https://cdn-cms.f-static.net/uploads/4416660/normal_605fb58a421a3.pdf
    • https://cdn.sqhk.co/nuduniguwufo/wbyjbmz/cute_pomeranian_puppies_for_sale_near_me.pdf
    • https://cdn.sqhk.co/nurijodefa/oHig3hh/air_force_football_game_today.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fegedenem.rf.gd/husqvarna_445_chainsaw.pdf
    • http://fobunedofakane.rf.gd/vawikixexabixatubudug.pdf
    • http://febarufowit.epizy.com/skilled_occupation_list_australia_2020.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e844.bin
0b1524935fd4b5e5c152bae0cb156971a738d38718abe3e6a52e0c5da07752d9
pdf-font-stream PDF embedded font (sfnt) at offset 0xE844 5088 bytes
font_01_sfnt_off0000f965.bin
706ecca91ceb7a92b6693bbe260b18f222c45ace295f95f9f5cfc83c282ce06f
pdf-font-stream PDF embedded font (sfnt) at offset 0xF965 12396 bytes
font_02_sfnt_off00012207.bin
8c1e3298cb301b6aa2c2aeff0a89e1cafee6626e56d5ffa98ad52a7598c40df9
pdf-font-stream PDF embedded font (sfnt) at offset 0x12207 16168 bytes