Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ffaa7c6ab68647d…

MALICIOUS

PDF

77.1 KB Created: 2021-03-29 19:43:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ca164d2d8489e4390de05cb2aa1e0cf SHA-1: 789876bbe457721138fcbedbca0fe2f4bac344cf SHA-256: 3ffaa7c6ab68647d30ea530f769552fe4b34b97510c5330a61f8e90d552e7064
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI that points to a URL associated with phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the heuristics suggest the document is designed to redirect the user to a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://xezojetit.ru/wix?keyword=weather+merit+badge+workbook+answers
    • https://ronojunigamedez.weebly.com/uploads/1/3/5/2/135297775/zumukuvugazufutibop.pdf
    • http://umdtheatre.ru/usb_turntable_reviews_uk1tdow.pdf
    • http://de-bewertung-id-q2e5t23.top/what_does_base_hourly_rate_meangq305.pdf
    • http://golosa-spasibo.ru/zogobuvipulatogovo1w5h1.pdf
    • http://about-fb-support.com/download_keith_sweat_albumfjblq.pdf
    • https://gegoviboz.weebly.com/uploads/1/3/4/8/134876631/sexodumavikavoseta.pdf
    • http://tefitagesev.mypressonline.com/download_foxit_reader_gratis.pdf
    • https://pikimitif.weebly.com/uploads/1/3/3/9/133997727/bexopa.pdf
    • https://bazunebusa.weebly.com/uploads/1/3/5/3/135397504/puroxabulunabasuv.pdf
    • http://lorenbayi.com/how_to_reset_sears_garage_door_keypad2n7qt.pdf
    • http://smartcoin.design/riturivafulesexapojojofu33h7q.pdf
    • http://ottics.ru/how_to_change_filter_on_dyson_small_ballel1q3.pdf
    • http://magic-world.site/nugijinelavukopebuxodawanqwgu2.pdf
    • http://life-news.tech/the_family_crucible_sparknotesepl9u.pdf
    • http://appletopshop.ru/52861783950z1pef.pdf
    • http://ritual-venki.online/353472248079kjws.pdf
    • http://callipakk2.site/purble_place_game_mac8wvpv.pdf
    • http://itravelimpressions.com/punjabi_song_dance_video_201800y60.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/vebogotexaf/elite_dangerous_horizons_combat_guide.pdf
    • https://s3.amazonaws.com/kotodur/42061305946.pdf
    • http://sitafefisoju.atwebpages.com/applications_of_trigonometry_worksheet.pdf
    • https://s3.amazonaws.com/setigafat/on_the_road_auto_group_bronx_shooting.pdf
    • http://ligujizulogi.atwebpages.com/66045749486.pdf
    • https://s3.amazonaws.com/fikuvine/what_is_my_race_if_im_black.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_off0000ef0e.bin
feb1b1b84992016aca8169ebceca345c994c2889517f7122e08a3c290b6b90a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF0E 5516 bytes
font_01_sfnt_off000101b6.bin
f6e3f5b3f4069b6fbe24c31155a390f26fec9c63cdd71d3932dd4ca70e198ced		 pdf-font-stream PDF embedded font (sfnt) at offset 0x101B6 10828 bytes

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