Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cc305c36baa7fb7…

MALICIOUS

PDF

35.1 KB Created: 2021-06-19 18:25:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: a1af6553d587d07f6075d24c5c71a61e SHA-1: 488901339828fd169a2408e869cac5ccbc9e0f71 SHA-256: 3cc305c36baa7fb7a8dc0f49345cdde86faffc234380de95f51b662d3df7c10e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites that are flagged as malicious redirectors, specifically advertising game hacks and generators. The document body and heuristics indicate a lure for free in-game items, likely to lead users to phishing or malware download sites. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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-jailbreak-noclip-hack-cheat-engine-game-hack In PDF document text
    • http://sellitafrica.com/media/storage/editor/files/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-minecraft-bedrock-server_GM479516143.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/robloxunlimed-verification-free-robux_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/moonactive-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/coin-master-32-hack-apk_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/claim-roblox_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/roblox-free-play_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/hack-magic-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-roblox-script-obfuscator_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-robux-clothes_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-shirt-promo-code-for-roblox_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-robux-cards-2021_GM431946152.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_off000030d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30D2 22536 bytes
SHA-256: cb61e90b33c6ddd998c108934394af59511ecb51a4470a7e1d921cde4add7add
font_01_sfnt_off00006319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6319 19388 bytes
SHA-256: 9fad5152ffbe0656c35bacde33a562e49b032065aabcd2d1d654e51a455c4331

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