Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d4d23e0a9bdd15a…

MALICIOUS

PDF

68.7 KB Created: 2021-03-23 04:13:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ac3576f91d11c63e379b8d34cd82736 SHA-1: 7c3416641277e658117aab8826b7ded9abbda220 SHA-256: 3d4d23e0a9bdd15a9edca2a3ecd15a8e79ec179bbe3f5b07bb1ef7a6e3845a1b
126 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs pointing to external sites, suggesting a phishing or malware distribution scheme. The PDF structure and embedded content are consistent with attempts to disguise malicious links or content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://soxebez.ru/wix?keyword=fire+flower+mario+pixel+art
    • https://gakewejodum.weebly.com/uploads/1/3/4/9/134902465/a5ae91.pdf
    • https://tisemadu.weebly.com/uploads/1/3/4/3/134387657/2792598.pdf
    • https://puxofigu.weebly.com/uploads/1/3/5/3/135347112/fexopenofurogen.pdf
    • https://cdn.sqhk.co/nowonipewo/IQgchi8/jisalanala.pdf
    • http://kowojolajamuv.getenjoyment.net/goviw.pdf
    • https://cdn.sqhk.co/genopeno/kltibgg/dialga_shiny_card.pdf
    • https://kobirozo.weebly.com/uploads/1/3/4/8/134846370/19a2c5d8b6acf61.pdf
    • http://rixorevu.getenjoyment.net/jigefinibodilokiwubema.pdf
    • https://wawedubogefolik.weebly.com/uploads/1/3/5/3/135391715/863c2ecd8e046c8.pdf
    • https://cdn.sqhk.co/gutejalajige/hhadRic/elifoot_19_20_apk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sufutogikid.rf.gd/25463040046.pdf
    • https://s3.amazonaws.com/fuvidokibet/payback_2_game_mod_apk.pdf
    • http://lorenivi.rf.gd/conduction_equation.pdf
    • http://jupegojut.atwebpages.com/rebiremasiloxasit.pdf
    • https://s3.amazonaws.com/tirimofufemukat/baltic_states_travel_guide.pdf
    • https://s3.amazonaws.com/bomifabipi/winrar_min_ph.pdf
    • http://wokixewo.epizy.com/kimubekulizufi.pdf
    • http://xolevusafo.myartsonline.com/95898949101.pdf
    • https://s3.amazonaws.com/daraniwekamidir/divine_mercy_image_high_resolution_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_off0000ce2a.bin
07a8b56d4060eb2071f25f4c2415f8ffd177c48eee6ae3186b0f999c9925fb1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCE2A 4984 bytes
font_01_sfnt_off0000df21.bin
977295699cd17d016a2fe55b0be03c95434e505b9ef7ebd91de6127fc4781513		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF21 11152 bytes

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