Malicious PDF — malware analysis report

Static analysis result for SHA-256 65c39e30425754ea…

MALICIOUS

PDF

79.9 KB Created: 2021-04-02 23:56:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68e4307d6bb7f1c0374a260091410b78 SHA-1: 566c34f84e1e9a0416da8b472428a23b8ceb7181 SHA-256: 65c39e30425754ead81c4afad34fc0d7805b3019491a944e1d0682035e70712a
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 embedded URLs, one of which is presented as a question about technical drawing dimensioning to entice clicks. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to lead the user to a malicious resource, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://cdn-cms.f-static.net/uploads/4366402/normal_5fd76c1749d31.pdf
    • https://cdn-cms.f-static.net/uploads/4467975/normal_6041d9d9bd42b.pdf
    • https://cdn.sqhk.co/nizidevogaka/jeKjaKJ/discord_bots_mee6_music.pdf
    • https://cdn-cms.f-static.net/uploads/4383300/normal_5fd841241f013.pdf
    • https://cdn.sqhk.co/dutaxato/nia3jgf/snapchat_emojis_pink_hearts.pdf
    • http://veselutut.mywebcommunity.org/attestation_de_salaire_vierge.pdf
    • https://cdn-cms.f-static.net/uploads/4420764/normal_5fdb165c52af4.pdf
    • http://bodaweziwov.mypressonline.com/arabic_to_urdu_dictionary.pdf
    • http://fagumawegoleleb.mypressonline.com/78666573017.pdf
    • https://cdn.sqhk.co/xemugugafot/hRPghgf/capsule_wardrobe_herbst_winter_2020.pdf
    • https://cdn-cms.f-static.net/uploads/4409814/normal_6029a7c340d46.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://feedproxy.google.com/~r/wb/ENAH/~3/0IJhScypsXo/wb?keyword=what%20is%20the%20importance%20of%20dimensioning%20in%20technical%20drawing
    • https://s3.amazonaws.com/bepukuba/jidexewenesafazuw.pdf
    • https://s3.amazonaws.com/tometubufimopim/mopom.pdf
    • https://s3.amazonaws.com/sogovekevi/fountas_and_pinnell_abc_chart.pdf
    • https://s3.amazonaws.com/dosalapasenow/tibifetavizidodala.pdf
    • http://guwaxilajoxeza.onlinewebshop.net/mathematics_dictionary_download.pdf
    • https://s3.amazonaws.com/gorajikunobixi/dirty_mind_puzzles_with_answers.pdf
    • https://uploads.strikinglycdn.com/files/26e89c3a-d8f3-44b7-9e9e-39cfe64e7eb9/53349190177.pdf
    • https://uploads.strikinglycdn.com/files/fb22b64f-e37c-41c8-97f6-d3d8c4a2274e/rode_videomic_micro_vs_me.pdf
    • https://uploads.strikinglycdn.com/files/7c549f7b-7c5f-46ff-b6d9-5db3df72e8f7/what_is_the_most_attractive_hair_and_eye_color_combination.pdf
    • https://s3.amazonaws.com/zumomasugipeno/betrayal_at_house_on_the_hill_game_review.pdf
    • https://uploads.strikinglycdn.com/files/65873268-4d5c-489c-8274-dd2068a19dbc/pimidunakavuso.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_off0000f522.bin
1afc506259455c7abbd0c81f5824c246b575ac11474dd297129212d3a397109a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF522 5676 bytes
font_01_sfnt_off0001085c.bin
5cb9747aecfbf8a5edd0d4880cdcf77126ecbc6cd7841d2e389d727ad7b037a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1085C 11696 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.