Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4a69e48b2f5b156…

MALICIOUS

PDF

70.0 KB Created: 2021-03-23 04:38:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aedaade5c0a712b80214c21a644dd766 SHA-1: 228291c5efa4008e00d14f1e37e2d1051c65b8ba SHA-256: a4a69e48b2f5b1560012f818f7e54750c87deef9a653292da6f2d0862d075960
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a malicious domain, likely intended to host a phishing page or download further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to exploit users by directing them to malicious content.

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://vilenefex.ru/wix?keyword=manchester+habitat+for+humanity+-+business+office+manchester+nh
    • https://cdn.sqhk.co/totafeta/jhMUvqQ/beauty_routines_at_home.pdf
    • https://cdn.sqhk.co/ratevusur/xc8tiax/69979503214.pdf
    • https://cdn.sqhk.co/letarezetap/6hdigjb/calligraphy_fonts_free_marathi.pdf
    • https://cdn.sqhk.co/lolajelor/pif1AEH/meena_game_online.pdf
    • https://cdn.sqhk.co/wixadigizal/hdjeZhg/37857884494.pdf
    • https://cdn.sqhk.co/girewobo/ZNxWiiX/cod_modern_warfare_battle_royale_tips_and_tricks.pdf
    • https://static.s123-cdn-static.com/uploads/4387703/normal_5fe23873ab73a.pdf
    • http://memimusisat.getenjoyment.net/26312530743.pdf
    • http://fujigukatujewu.medianewsonline.com/muxojagilutewuvutu.pdf
    • http://jivavesomuviz.getenjoyment.net/wutom.pdf
    • http://tejidirexe.mywebcommunity.org/peer_gynt_in_the_hall_of_the_mountain_king_lyrics.pdf
    • https://cdn.sqhk.co/wixexozesila/52TjH3G/hitman_go_definitive_edition_ps5.pdf
    • http://dogalijun.scienceontheweb.net/dasadudopoki.pdf
    • https://static.s123-cdn-static.com/uploads/4465249/normal_5fe03c65b9ff8.pdf
    • https://cdn.sqhk.co/diduwuposenu/jjaMgg0/juraneginufokebibu.pdf
    • http://memisada.mygamesonline.org/ahmet_hamdi_tanpnar_yaz_yamuru.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/fojaxexino/44759207241.pdf
    • https://s3.amazonaws.com/kuxegu/can_i_renew_my_drivers_license_after_it_expires_in_maryland.pdf
    • https://s3.amazonaws.com/towakog/army_commendation_medal_template.pdf
    • https://s3.amazonaws.com/lukepepe/arduino_mega_2560_schematic_altium_download.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_off0000d03b.bin
8a7c2c864bd6bff72549376c56688c78eb42569033824cdfd618d845cd4a362b
pdf-font-stream PDF embedded font (sfnt) at offset 0xD03B 5368 bytes
font_01_sfnt_off0000e270.bin
7e5347327fccf6c0cff18b9c4b8e5631a6a7b16b5534d612b41db7785372fcc8
pdf-font-stream PDF embedded font (sfnt) at offset 0xE270 11228 bytes