Malicious PDF — malware analysis report

Static analysis result for SHA-256 a15693a70b12e9b1…

MALICIOUS

PDF

163.4 KB Created: 2021-03-23 02:30:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eefe4d3c63bb164195b6ed2a870edb96 SHA-1: 9a3d473dd3cc1d4d2a0f6f464a680d7ec506c5ba SHA-256: a15693a70b12e9b13bac01cfec08530da894c74ff17beabbc83fe4802c00ef3b
96 Risk Score

Malware Insights

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

The ML classifier and ClamAV detection strongly indicate this PDF is malicious. It contains an embedded URL pointing to 'dafemum.ru', likely a phishing or malware distribution site. The presence of multiple embedded URLs and the PDF structure suggest an attempt to trick users into visiting a malicious site, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://dafemum.ru/wix?keyword=ai+takahashi+2019
    • https://cdn.sqhk.co/redixebu/iijeDje/aroma_cafe_menu_nutritional_information.pdf
    • https://cdn.sqhk.co/zejizoguzut/hijaK3W/pac_boyertown_pa.pdf
    • https://cdn.sqhk.co/runetonorox/iaU5jaV/50995806728.pdf
    • https://cdn.sqhk.co/derixosu/gdpibxo/kokejagujatizuxebov.pdf
    • https://cdn.sqhk.co/sovokeduseb/gjajbia/spartan_firefight_game.pdf
    • http://yoga-italy.space/24206486631ob6nr.pdf
    • http://zisuroto.mygamesonline.org/kidde_co_alarm_instructions.pdf
    • http://sawemawe.mywebcommunity.org/resistance_band_exercises_for_seniors_with_pictures.pdf
    • http://jivusibofonefud.mygamesonline.org/pipejofofodo.pdf
    • http://yoga-italy.space/27964634877t5hlh.pdf
    • http://keksik24.ru/39208018672s3nvn.pdf
    • https://cdn.sqhk.co/kekotenonaxu/bGVdjgh/99428419711.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/dba391f6-6aec-45da-a494-041136e97486/how_to_use_a_innova_3020b_code_reader.pdf
    • https://uploads.strikinglycdn.com/files/56bde6ec-e999-4b7a-9db7-f1b615cd9104/california_real_estate_principles_16th_edition_by_walt_huber_ebook.pdf
    • https://uploads.strikinglycdn.com/files/302ba63c-1a3f-498b-8436-64ac2c143095/inspiron_3847_ram.pdf
    • https://uploads.strikinglycdn.com/files/0c0b7faf-70e3-4aff-a3e7-b26e10d42b4b/fuxipafuladetap.pdf
    • http://sadoboxijowem.myartsonline.com/522797404.pdf
    • https://uploads.strikinglycdn.com/files/f71a4c95-d91f-4afa-a466-24d943094fb6/irregular_verb_tenses_list.pdf
    • https://uploads.strikinglycdn.com/files/e10314fe-9c75-4378-898c-3db6404242e9/cuisinart_coffee_grinder_dbm-8_review.pdf
    • https://uploads.strikinglycdn.com/files/fd9488fe-dc52-4d5a-a4c8-a7776c204f8d/56894652143.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_off00014b99.bin
16d31a70ce952d0631d817dc882e933c1f956bb4683773702914ac4d48b8e74d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14B99 74468 bytes
font_01_sfnt_off00022d1c.bin
4ca179b257b2cc9fb812b3402ddc4e40ebd1a98ef7e93f91ca46de2727efd3fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x22D1C 5180 bytes
font_02_sfnt_off00023ebc.bin
b46df94606e30268fb5d1164f315ca0e07bb660077950fe8584e8ccc43d3834d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23EBC 12588 bytes
font_03_sfnt_off0002684b.bin
02a2f4ad244966886ad4408914dd925295e90f74bba82f240995d744243e614d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2684B 16308 bytes

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