Malicious PDF — malware analysis report

Static analysis result for SHA-256 62e8e101e94d4783…

MALICIOUS

PDF

74.5 KB Created: 2021-04-24 03:02:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8309c15fe0444a2c18045cb91d8ea5f1 SHA-1: 9917c2351ffc56269765d1fe69c9a4c35ca573fb SHA-256: 62e8e101e94d4783ce6fcad224e26b230874ddff594c6d76d5f328fb16f1ae6f
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, 'seumenha.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Acca nino x jean'. No scripts were extracted, but the presence of external URIs and the malware detection strongly suggest a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/strik?utm_term=acca+nino+x+jean
    • https://cdn-cms.f-static.net/uploads/4489411/normal_603a886ce20c5.pdf
    • http://gidusalutuwisut.iblogger.org/the_road_not_taken_summary.pdf
    • http://expressday.online/vifosomowirobozw4l6.pdf
    • https://cdn.sqhk.co/kevejonob/cTKhjEJ/dearth_motors_used_cars.pdf
    • https://cdn.sqhk.co/runenuti/FoijTrw/98905748793.pdf
    • http://grigolia-studio.ru/junikoxiwekra5.pdf
    • http://new-leggins.site/sports_illustrated_covers_list3dusy.pdf
    • https://static.s123-cdn-static.com/uploads/4370299/normal_6009221ae1a75.pdf
    • https://cdn-cms.f-static.net/uploads/4382627/normal_60689bfaa87e4.pdf
    • http://copyrightproblem.com/nefropatia_diabetica_fisiopatologia_20200mgt0.pdf
    • https://cdn-cms.f-static.net/uploads/4414495/normal_606b0d5d93402.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fezimebuwoki.rf.gd/80095419884.pdf
    • https://uploads.strikinglycdn.com/files/f7468d55-44b4-43cd-a3b5-d587d9d604a5/craftsman_yt_3000_mulching_blades.pdf
    • http://vabedagexod.rf.gd/morigubesujiwekopira.pdf
    • https://uploads.strikinglycdn.com/files/fd228b20-2a8a-407d-8d8b-dfe56270dfd9/will_a_guy_purposely_ignore_you.pdf
    • https://uploads.strikinglycdn.com/files/c21715a9-480d-4e70-a952-e096f6d0f48f/delonghi_safeheat_fan_heater_-_hfx65v15ca.pdf
    • https://uploads.strikinglycdn.com/files/481320a5-f7c3-4a44-b265-7f9e63b4c3c1/the_little_red_hen_online_text.pdf
    • https://uploads.strikinglycdn.com/files/1aeaf425-d7ea-44ce-9888-765c50466fa5/is_sao_fatal_bullet_good.pdf
    • https://uploads.strikinglycdn.com/files/4630321d-762d-4333-86ec-3ee40d47cdcc/how_much_does_an_oil_change_cost_for_a_jeep_renegade.pdf
    • https://uploads.strikinglycdn.com/files/496d8075-8a56-4f09-b1f3-05131d468977/scott_pilgrim_vs_the_world_game_complete_edition_price.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_off0000cc34.bin
02de56e0f0c8a87b3f160a164867f26cf7c8c6559c27489f67a8465ef9ccc722		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCC34 4620 bytes
font_01_sfnt_off0000dc0c.bin
da0229132105a1901813126c5c032896904db953d46f2ac71850a2ae375b03db		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC0C 10944 bytes
font_02_sfnt_off000101e4.bin
81f94dac077eed1c9240b3d472c7cdf6372530beedb13e20a10d49f90eb36dca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101E4 17708 bytes

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