Malicious PDF — malware analysis report

Static analysis result for SHA-256 68f16c719906990d…

MALICIOUS

PDF

79.7 KB Created: 2021-04-07 20:07:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cdc2eb6e67c90a4a2456c19c8b7e9aea SHA-1: 539eadd4c71af707ee79fb96e7db24b3cc773577 SHA-256: 68f16c719906990d7d9c55533d25584d44e57f8cfc6ff18b42208cef924c2954
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a critical heuristic firing for ClamAV detection. An external URI, 'https://pelibifir.ru/strik?utm_term=how+to+drain+water+from+campbell+hausfeld+air+compressor', was extracted, indicating a likely attempt to redirect the user to a malicious site. The document body is heavily obfuscated, but the presence of the URL and the heuristic firings strongly suggest a phishing or malware delivery attempt.

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://pelibifir.ru/strik?utm_term=how+to+drain+water+from+campbell+hausfeld+air+compressor
    • https://cdn.sqhk.co/gasawivu/aeRhhge/riyadh_mv_cables_catalogue.pdf
    • https://cdn.sqhk.co/demanajinu/aigCjaN/simutozojujize.pdf
    • https://static.s123-cdn-static.com/uploads/4479235/normal_5ffe6d0e3134b.pdf
    • https://cdn.sqhk.co/xopuxuvop/IaXihhc/2003737019.pdf
    • https://cdn.sqhk.co/wuwexosul/gfqHwgf/95306639444.pdf
    • https://static.s123-cdn-static.com/uploads/4417314/normal_600275956cb4a.pdf
    • http://viniveba.mywebcommunity.org/62416550243.pdf
    • https://cdn.sqhk.co/jimevexir/fhijbOZ/moto_creator_mod_apk_unlimited_money.pdf
    • http://bodaweziwov.mypressonline.com/true_to_the_game_book_3_summary.pdf
    • https://cdn.sqhk.co/libarazituw/ichi4ja/sutiwazuwexomoramomebe.pdf
    • https://cdn.sqhk.co/nezusoxe/Xicq7Es/swat_2_movie_cast.pdf
    • https://cdn.sqhk.co/rekubapapup/ciiifji/waxugefirowa.pdf
    • https://cdn.sqhk.co/medukukekuke/FibS6id/origami_box_easy.pdf
    • https://cdn.sqhk.co/wozejodes/aKieOja/legend_vs_zombies.pdf
    • https://cdn.sqhk.co/zakoduba/cXjcALQ/pusexekiwajagotevurowuwi.pdf
    • https://cdn-cms.f-static.net/uploads/4488317/normal_60436c0ceaa09.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://kigagizotag.onlinewebshop.net/55279886911.pdf
    • http://kemiwadosu.rf.gd/la_bella_durmiente_original.pdf
    • http://vapuzinejag.rf.gd/2904692966.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec25.bin
453fa15bf201dfac5aa32e9da9d4a94c6ab0a24c078703a89faec4d32afeb4f6
pdf-font-stream PDF embedded font (sfnt) at offset 0xEC25 5468 bytes
font_01_sfnt_off0000fe96.bin
f3d9734664fc5a272e19fb84564db2b43d6350eec4b9d7206b19800723149bda
pdf-font-stream PDF embedded font (sfnt) at offset 0xFE96 10664 bytes
font_02_sfnt_off000122aa.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x122AA 4324 bytes