Malicious PDF — malware analysis report

Static analysis result for SHA-256 f756edbd89323b81…

MALICIOUS

PDF

79.5 KB Created: 2021-04-01 19:16:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c535d67bfd724df0573ae628ea1cebb SHA-1: cf614a7c4e90474462cee40aa26feba6806af0f4 SHA-256: f756edbd89323b810c7961def3567a6a5a980cba9f07cc108337e8c6cc3b86ea
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://lozipotod.ru/123?utm_term=articulations+in+music+pdf', suggesting a phishing or malware distribution lure. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing attack, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://lozipotod.ru/123?utm_term=articulations+in+music+pdf
    • https://cdn.sqhk.co/xugiwatokax/QZjbPVH/68997405647.pdf
    • http://goxutasabadatum.sportsontheweb.net/92011720807.pdf
    • https://cdn.sqhk.co/nanagajog/fnGtgVK/ludo_game_download_install.pdf
    • http://jasazotinalol.mygamesonline.org/sigmund_freud_dream_interpretation.pdf
    • https://cdn.sqhk.co/tivinarafuvu/LyKjehe/word_puzzle_games.pdf
    • http://gurerawe.22web.org/android_constraintlayout_barrier_margin.pdf
    • https://cdn.sqhk.co/gixedomawa/hgjbuJM/brabantia_perfect_flow_ironing_board_cover_c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/1aabcf6d-896f-4cc6-ad84-8e4a35012845/31367409462.pdf
    • http://boxijekew.atwebpages.com/how_do_i_inspect_a_used_car_checklist.pdf
    • http://pinixivula.epizy.com/ruvujogiperaxepojiwumuvub.pdf
    • https://uploads.strikinglycdn.com/files/81c71f00-7d10-47fe-8059-af5a85bff26c/tisusun.pdf
    • https://d25e5d79-f3dc-43ab-8538-58f2f4730235.filesusr.com/ugd/898300_f9d4a1302a5044888e2ad4b95960a646.pdf?index=true
    • https://28a90398-13b1-4b58-b54c-ed045a6bddf2.filesusr.com/ugd/7e9e1f_d0418fd21dd649fd9a67a92fd52bcd56.pdf?index=true
    • https://ddb1515c-011f-4d6c-9a6c-b305a2039a85.filesusr.com/ugd/477ac5_db9ad1be549946409265d5b4dfb16098.pdf?index=true
    • https://34886cf3-15ed-44db-93e8-8979dc7c4cd7.filesusr.com/ugd/ea2c45_44a5476d33eb480e86b02b13798676c5.pdf?index=true
    • http://zabamaxe.rf.gd/most_dangerous_game_crossword_puzzle_answers.pdf
    • http://xikusaduxofi.atwebpages.com/99989656520.pdf
    • https://836291d8-7b77-40db-be8c-3105928c7ef3.filesusr.com/ugd/aae074_6b86d149f02547c385a94a64ecb47aca.pdf?index=true
    • https://c301b42c-deab-4116-afcd-a09dd0728425.filesusr.com/ugd/4bb894_b8f07eeb9d9b47d39e44747e004408da.pdf?index=true
    • http://tenowuwewid.epizy.com/fewatuxowimajemusilolude.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ede1.bin
7baadf5b8dadf39b5d1fd30d43f88aac1871b29d0c5064cf3afd8a1d2167e722		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE1 5052 bytes
font_01_sfnt_off0000fee5.bin
b1cdcce91eac629d01e889ff4507ca4bf327cbd7ca922ac4aec0b594f9653e26		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFEE5 10520 bytes
font_02_sfnt_off000122c0.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x122C0 4324 bytes

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