Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5e4a2ce19769501…

MALICIOUS

PDF

73.6 KB Created: 2021-02-19 14:47:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f8d701e7d64131479cc5cd00367cee4f SHA-1: d1effbc49550b7bb5277a1b2ad9c88280f26f539 SHA-256: a5e4a2ce197695015700b05dd9944adce9cd2f92265602753ec053854f73d3bf
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://baarspo.ru/wix?keyword=the+sims+4+mod+apk+android', which is presented as a lure for downloading game mods. While no scripts were explicitly extracted, the PDF structure and the embedded URI suggest an attempt to trick the user into downloading a payload, aligning with phishing and malware distribution tactics.

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://baarspo.ru/wix?keyword=the+sims+4+mod+apk+android
    • https://cdn-cms.f-static.net/uploads/4415327/normal_60126f50702fd.pdf
    • https://cdn.sqhk.co/vawapisoxe/qZDjbaq/wusejodufiwasev.pdf
    • https://cdn.sqhk.co/xijoxerivu/ghdEgft/japigusufowome.pdf
    • https://static.s123-cdn-static.com/uploads/4444648/normal_5fe2991f8a33d.pdf
    • https://cdn.sqhk.co/lazaxosu/BzTjg7Y/neon_horizon_r6.pdf
    • http://xurijozidarov.22web.org/79517896992.pdf
    • https://static.s123-cdn-static.com/uploads/4470977/normal_5ffbf71e3a09a.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/davawina/descargar_juego_armed_heist_para_android.pdf
    • http://tofaveme.epizy.com/plain_blue_background_images_free.pdf
    • https://s3.amazonaws.com/tanapilamaxi/bsc_csit_syllabus.pdf
    • https://s3.amazonaws.com/xokebore/tv_guide_perth_10.pdf
    • https://s3.amazonaws.com/vebenok/kentuckiana_court_reporters_lexington_ky.pdf
    • http://fozabenisos.epizy.com/figurative_language_worksheet_6.pdf
    • https://s3.amazonaws.com/tizowodifi/rubalo.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_off0000e148.bin
17e716dca65a3fec7598a0916c50e4a82ead57e8d59b7a6990ca70bb8bf15e43		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE148 5268 bytes
font_01_sfnt_off0000f304.bin
200f6dfe29c086ec186bd1b8f344d04e89f836d69b340e582467ed12abd72b21		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF304 11296 bytes

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