Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a3ee091875a1be2…

MALICIOUS

PDF

36.1 KB Created: 2021-07-02 00:23:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: f08115bbc6ad29ef1a47613d32fa4a6a SHA-1: 0b5b6653ae0204927e280caf775b9c33e3ec077e SHA-256: 8a3ee091875a1be238ea80fecc8d6bb45115ef59ae25294781208e46277805b7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and domains associated with scams, specifically targeting users interested in game hacks and currency. The document body, though partially corrupted, contains text and URLs consistent with a phishing lure for free game items. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful 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/free-rixty-codes-for-roblox-2021-game-hack In PDF document text
    • http://moneymaker-gold.de/files/coin-master-free-spin-whatsapp-group_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/new-obby-gives-you-free-robux_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/roblox-hack-get-unlimited-free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/free-robux-every-day_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://moneymaker-gold.de/files/epic-mining-roblox-hack_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/coin-master-hack-android_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/robux-hacks-code-admin-commands_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/roblox-hack-script-pee-pee_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/free-blond-hair-roblox_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/free-h-robux-game_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/free-robux-generator-only-quiz_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/20-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_off000034a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34A7 22360 bytes
SHA-256: ee03531dccee5d5e708ce5c55d2a76f21f3c345c1e7d2d898277947f72fbcbee
font_01_sfnt_off0000663e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x663E 19628 bytes
SHA-256: 8d9199b8652f35f3803eb2601a01f1e9975516cd9e1be880f708cba78616660e

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