Malicious PDF — malware analysis report

Static analysis result for SHA-256 305d98b16e132919…

MALICIOUS

PDF

102.0 KB Created: 2021-04-05 05:24:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: ea684a855eddd12eff55e50670a8155d SHA-1: a91f1846a37867847250d9c451ce99e7eaa6e6df SHA-256: 305d98b16e1329195b385cbb59fc8b4c1cd5a4dec0d5f49a44461863330a485c
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though partially garbled, suggests a lure related to vehicle maintenance to entice clicks on the malicious link.

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://maypoin.ru/strik?utm_term=how+to+flush+transmission+fluid+from+torque+converter PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4426260/normal_605690f14f198.pdfIn PDF document text
    • http://storefromit.pro/the_dark_knight_joker_wallpaper_downloadmkyvu.pdfIn PDF document text
    • http://erethiztzj.space/971909794179c7rj.pdfIn PDF document text
    • http://coupons2020.info/rick_and_morty_comic_bookv914o.pdfIn PDF document text
    • http://mynasert.online/video_converter_pro_apk_vidsoftechbk7q0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447089/normal_5fd9733762c56.pdfIn PDF document text
    • http://denazofumoxebo.iblogger.org/31872017915.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366984/normal_6001d543955f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473640/normal_6052f4c816c3f.pdfIn PDF document text
    • http://vorecan.space/46871964661gh1oo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9db6f490-a233-4a39-b875-ef65ce76acca/60026465081.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/spotify_web_player_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/wegugus/apc_smart_ups_1500va_rack_mount.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1bdc279-86b3-41fd-acc8-e7b745c02dd5/89066895935.pdfIn PDF document text
    • http://bewexipobafuza.rf.gd/mekalezupotowofubefetenam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5014029-df64-4e93-9fed-9508413dc716/45772947621.pdfIn PDF document text
    • https://s3.amazonaws.com/lusabifef/how_the_grinch_stole_christmas_streaming_1966_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c7b7162-e47c-44d0-a1bc-1de1dbf121c6/wolemukuvumizip.pdfIn PDF document text
    • https://s3.amazonaws.com/bitizopovopaso/12368299290.pdfIn PDF document text
    • https://s3.amazonaws.com/buxoparadazegu/wedding_invitations_templates_microsoft_word.pdfIn PDF document text
    • https://s3.amazonaws.com/povodijirig/garmin_oregon_650_gps.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014619.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14619 2988 bytes
SHA-256: d30a6ffd394df9344f330e1f648d51d9d5d37fe465dbe29c3bac9ce24417f4ce
font_01_sfnt_off000150cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x150CF 5500 bytes
SHA-256: 31f5683d4d050f778c83a1f85c48a9183a3165290d566f7f910c585b2d41e244
font_02_sfnt_off0001636e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1636E 11320 bytes
SHA-256: 9aa4959b62d459c78692755647106497fc951653ccc70834669cb9597cf4e567

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