Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e5937626fdd3fd8…

MALICIOUS

PDF

78.7 KB Created: 2021-03-11 19:28:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a7aa40884b35b386b0ff56c86396cc5 SHA-1: 64b036f2617039f4aadf9185dc7d61238214e3f6 SHA-256: 1e5937626fdd3fd80a475a0e9023c7f49b2e1b125516c60eacfdaaa07dd2bdbe
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that is likely used for phishing or to download a secondary payload. The document body, though heavily obfuscated, references 'Bedsheet painting at home', suggesting a lure to entice users to click the malicious link.

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://maypoin.ru/123?utm_term=bedsheet+painting+at+home
    • https://static.s123-cdn-static.com/uploads/4465938/normal_5ff65a8c50283.pdf
    • https://cdn.sqhk.co/wepigosogo/ieIlVgc/fontstruct_curve_tutorial.pdf
    • https://cdn.sqhk.co/vexedobasof/idDDhhp/mobile_screen_video_recorder_apk_download.pdf
    • http://pofuxubilet.sportsontheweb.net/renew_alaska_drivers_license_military.pdf
    • http://fifanaganogagu.22web.org/68510377596.pdf
    • http://vuzetasavuxoso.mygamesonline.org/sony_dvp-sr210p_remote_app.pdf
    • https://cdn.sqhk.co/xusovatovu/wihijs7/nuzigitem.pdf
    • https://static.s123-cdn-static.com/uploads/4500677/normal_5fdedaa87d3ee.pdf
    • https://cdn.sqhk.co/sevijeruba/wjavmjj/download_video_player_hd_720p._apk.pdf
    • https://cdn.sqhk.co/zijikunu/hhidfji/basketball_movies_black_players.pdf
    • http://ruluzuzadol.mypressonline.com/13965795394.pdf
    • https://static.s123-cdn-static.com/uploads/4459776/normal_5fcc026a2fd1c.pdf
    • https://cdn.sqhk.co/talurelope/hbtQOco/wisukasamutudosekudiraj.pdf
    • https://cdn.sqhk.co/pevejotomoma/iyghDdF/bubble_bobble_hero_2_free_download_pc.pdf
    • https://cdn.sqhk.co/xojugako/hjMBhgr/blackpink_rose_age.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://ludoxijijux.rf.gd/rezofusevagija.pdf
    • http://neguxonef.rf.gd/bharatiya_vidya_bhavan_sanskrit_books.pdf
    • http://sazasewugekupej.onlinewebshop.net/ihome_ibt230_set_date.pdf
    • http://gapoxuvopa.onlinewebshop.net/the_master_cleanse_by_stanley_burroughs.pdf
    • http://rizukapusapanom.rf.gd/ellipsis_worksheets_ks1.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6c1.bin
bd13fa836c6a8337f3e6084b31b6db5e2e81fb21f2fd108ca57d2af50bc49991
pdf-font-stream PDF embedded font (sfnt) at offset 0xF6C1 5292 bytes
font_01_sfnt_off000108a1.bin
84dc90648d8bf90f8b711f81e4682f69fbe1c21b48e3333a4662882a7ebb5519
pdf-font-stream PDF embedded font (sfnt) at offset 0x108A1 10724 bytes