Malicious PDF — malware analysis report

Static analysis result for SHA-256 192fdac6168c00dc…

MALICIOUS

PDF

35.7 KB Created: 2021-06-21 15:52:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: fae98ea3941f81a073d609a6551de4ce SHA-1: 39b16c0c5be389f3f3b83d921ae4b7f01ed7aeb5 SHA-256: 192fdac6168c00dcfb0985307cde51617ff74c35a0e9a22aa97913d19cb823c0
160 Risk Score

Malware Insights

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

This PDF document contains multiple links to known malicious redirectors and further malicious PDFs, disguised as game hacks and free items. The primary lure is for 'Roblox Free Clothes Hack Mobile', directing users to a URL that is flagged as a malicious redirector. The document's structure and embedded URLs suggest an attempt to trick users into downloading further malicious content or visiting compromised sites.

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-free-clothes-hack-mobile-game-hack In PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/how-many-levels-in-coin-master_GM406889139.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/free-robux-co_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/free-minecraft-mods-for-pc_GM479516143.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/coin-master-hack-apk-with-fb-login-2021_GM406889139.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/coin-master-games-download-free_GM406889139.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/roblox-moderators_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/fake-robux-codes_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/roblox-old-avatar_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/roblox-how-to-hack-gears-online-rpg_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/coin-master-how-to-get-japan-sushi-card-free_GM406889139.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/free-robux-link_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/free-tiktok-app_GM835599320.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/2021-free-robux_GM431946152.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/free-pet-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://jarviskeller.co.uk/media/storage/editor/files/june-29-coin-master-hack-no-human-verification_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_off00003210.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3210 22936 bytes
SHA-256: 78b049fd8aab049c79cd0585548b77ca4dc053e4f2e0e1837062507e16f8e763
font_01_sfnt_off0000659a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x659A 19404 bytes
SHA-256: f4c34a4cc622827cda2f3ada639b638cc8c7953f9137d54bd806ef4ac635681b

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