Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b4152dd20f70eef…

MALICIOUS

PDF

34.3 KB Created: 2021-06-29 05:32:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: ef7dfe8c4fe730538ad6c55ead73af63 SHA-1: 38e4f3856788c923cee18f028e40871f46d87a49 SHA-256: 6b4152dd20f70eef7bf5f406d42a33be4daef5b79599072f3fe281763b59556c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous links and references to game hacks and cheats, specifically targeting popular games like Roblox and Coin Master. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' indicates that the document links to a redirector for such content. The ML classifier also flagged this PDF as malicious with high confidence. The primary attack pattern involves luring users to external sites that likely host malware or facilitate further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://netcdn.co/app/431946152/roblox-hoops-hack-game-hack PDF link annotation
    • http://perpus.polimarim.online/repository/rbx-place-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-hack-unlimited-free-robux-tickets-no-survey_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/pokemon-go-accounts-free-list-2021_GM1094591345.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/como-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/keisyo-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/tons-of-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-roblox-printable-valentines-cards_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-free-coins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/pubg-uc-or-g_GM1330123889.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/counter-strike-roblox-offensive-hacks_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-hacks-for-bloxburg_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/zeluc-roblox-exploit-hacks_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-hack-roblox-2021-xbox-one_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-roblox-hoodie-template_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F44 22556 bytes
SHA-256: f4dc59aeb51eae77abbff6d1c3fd5b0d6be8d2c7483f5654fb5c29e5458fa279
font_01_sfnt_off0000617c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x617C 18832 bytes
SHA-256: baafc4a13a54c07605f1af62ba2f031311fe9b51d2989de83380ef9965e7b000

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