Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6cfa1c45fbd7207…

MALICIOUS

PDF

73.3 KB Created: 2021-03-08 09:48:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92602086bbcbb1544a1b65224bdb7a1e SHA-1: e8659964946143d0d796317d4605182f7bdf3cfc SHA-256: d6cfa1c45fbd720748f9349b3b5204dfa2a26fc96875d2212e674644e0167ad0
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that leads to a suspicious domain, identified as malicious by ClamAV and ML classifiers. The document body, though heavily obfuscated, appears to contain keywords related to product listings, suggesting a phishing or scam lure. No scripts were extracted, but the presence of external URIs strongly indicates an attempt to redirect the user to a malicious site.

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://ponafet.ru/123?utm_term=808+keychain+camera+battery+replacement
    • https://cdn.sqhk.co/dafisuwikib/h1hizgg/68482629161.pdf
    • https://cdn.sqhk.co/ligumorik/iCjcGih/thoracic_cavity_function.pdf
    • http://tetupamino.mywebcommunity.org/repodu.pdf
    • https://cdn.sqhk.co/kitujesijak/h80gJaL/sad_video_status_share_chat_kannada.pdf
    • http://dirujadejefogax.iblogger.org/open_source_business_card_scanner_android.pdf
    • https://cdn.sqhk.co/banuluwopote/cwaheHQ/20356270418.pdf
    • https://cdn.sqhk.co/tabuguran/igXkifl/farming_tractor_drive_simulator_tractor_game.pdf
    • http://kilijosizujowo.medianewsonline.com/suzukojadiva.pdf
    • https://cdn.sqhk.co/barevirus/aggvdij/32710195369.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://0e8f88b9-656e-4b05-9cd8-8bd477f85547.filesusr.com/ugd/95b9ea_dd14ccff938e4484af7347cc440f8eac.pdf?index=true
    • https://s3.amazonaws.com/wexukufedepim/bang_bang_full_movie_free_480p.pdf
    • https://s3.amazonaws.com/rufonali/apis_florea_information.pdf
    • http://suzufazelebumu.rf.gd/zuxevoxupi.pdf
    • https://77a80da1-97a3-4b40-ba11-54c6d232eb66.filesusr.com/ugd/39a0fd_efda9dc362fd48659486c94dfb73fcba.pdf?index=true
    • https://d1159ab4-cbf5-42eb-897b-83a5e94cd7da.filesusr.com/ugd/536122_83856b2f24f44286a998f8bb25443550.pdf?index=true
    • https://s3.amazonaws.com/vinejivunitego/suxilipodomuriledoxega.pdf
    • https://87c8fc71-818b-4167-bf0d-2ac3bc49ffd1.filesusr.com/ugd/f9d4cd_981c6b1eaa06433892ae5d42c532d42a.pdf?index=true
    • https://s3.amazonaws.com/domegagowevag/autocad_lt_2014_32_bit.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_off0000dfe0.bin
2ae83d099b220fa91a5ea18d94f5703c04dc39f2bc555ac1f142fb2de9c6a1c4
pdf-font-stream PDF embedded font (sfnt) at offset 0xDFE0 5540 bytes
font_01_sfnt_off0000f290.bin
98765961ffc4e4f22199f757db9881505c76dda52a95391b321f846cdd06b223
pdf-font-stream PDF embedded font (sfnt) at offset 0xF290 11152 bytes