Malicious PDF — malware analysis report

Static analysis result for SHA-256 966ad652d093cff8…

MALICIOUS

PDF

174.7 KB Created: 2021-03-17 14:44:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f55bf384e5449b4651af84f81da71342 SHA-1: 839106776ee4aabd64796b92c1101375d5aa9fc5 SHA-256: 966ad652d093cff8f796a0c41a5141ca613005408bafcdc5819724a2a81ac58d
96 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by multiple heuristics and a machine learning classifier. It contains embedded URLs that point to suspicious domains, likely intended to redirect users to phishing or malware distribution sites. The presence of these URLs and the overall classification strongly suggest a phishing attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://druttle.ru/wix?keyword=ouran+highschool+host+club+twins+difference
    • http://supernefritroller.xyz/harry_potter_filmed_castlefklnw.pdf
    • http://reduslim-buy.site/7525840887410cou.pdf
    • http://sallehub.xyz/25070024711cgxns.pdf
    • https://cdn.sqhk.co/zajagatetode/uiaojhE/tivaze.pdf
    • http://nesobaka7.xyz/fulaxixu7d7oi.pdf
    • http://pafugiwerokamez.iblogger.org/commandos_3_destination_berlin_full_game.pdf
    • http://lemiritafuwab.22web.org/dclg_fire_safety_risk_assessment_guides.pdf
    • http://fineagencyy.com/aadhar_card_mobile_number_registration_offline_formix71n.pdf
    • https://cdn.sqhk.co/rolileduvof/bgcvpe2/501_free_new_escape_games_level_29.pdf
    • http://swast-group.website/wowefowotaxotexigoxojev5c9rf.pdf
    • https://cdn.sqhk.co/wizevomorofe/wiehdwe/survivor_island_of_the_idols_cast_voted_off.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/labitajaxatufib/xisumumeletononaxunuxudul.pdf
    • http://bavunetaxigapi.rf.gd/79619885529.pdf
    • https://be934b08-0dcc-4e2e-8de1-c3c1c32dbfab.filesusr.com/ugd/d5415a_508665d6c8064d27a9a4e8e457b1c252.pdf?index=true
    • http://tujefozumuresul.epizy.com/chunariya_le_le_ja_bhojpuri_song.pdf
    • https://s3.amazonaws.com/kevava/48384796590.pdf
    • https://s3.amazonaws.com/belopudevuzuza/31081247289.pdf
    • https://15319a82-8c66-4906-b3c2-464277991f2b.filesusr.com/ugd/070acf_9ca993c6f80f42ef8067d7bbc2fe25c4.pdf?index=true
    • http://lexekugubaza.rf.gd/autocad_guide_book_in_gujarati.pdf
    • https://550dfcec-0280-4316-a0d5-68b74a7a20b9.filesusr.com/ugd/f59309_65ca6a2810a0488ea981f35b6736b048.pdf?index=true
    • https://dd7ee03d-3646-4e01-a1e1-4c0a7e2c9e57.filesusr.com/ugd/d7ba0f_4c0cb756db104ec4babf0f296550196d.pdf?index=true
    • 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_off0001f11c.bin
509298e806356c360e87c35478f2b0b0fef072fb5b23273640d47e05dedd267c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1F11C 41996 bytes
font_01_sfnt_off0002719b.bin
c36a3a6b923c78ab9307d4af372078e68c275df98dfb762e64525c0ebd04e0b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2719B 5540 bytes
font_02_sfnt_off00028478.bin
34adeceb8b3eeb732859f3582ddbeb80478dd5ac94b025941f23504753de2081		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28478 12364 bytes

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