Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2c7f426abbc6b29…

MALICIOUS

PDF

35.1 KB Created: 2021-06-29 02:50:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 006815f9cf5329c2e8ab36ff89d8e4d4 SHA-1: 147e30d3af960d225b03a3aaf013308b974babf7 SHA-256: f2c7f426abbc6b29af9e8953586119676d31ee1be41160ba69b001ad24d99e15
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector at http://netcdn.co/app/431946152/free-robux-really-easy-game-hack, disguised as a lure for free game hacks. The document body and heuristics indicate a social engineering tactic to trick users into visiting potentially harmful sites. No scripts were extracted, but the embedded URLs and the nature of the lure strongly suggest a phishing or scam attempt.

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-robux-really-easy-game-hack In PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-gamepasses-on-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/shirt-creator-roblox-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/hacks-for-robux-2021_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-hack-uk_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-free-gold-cards_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-roblox-shirts-templates_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/v3rmillion-roblox-hack-script-fnaf_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/solos-v-12-roblox-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-win-10-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/to-hack-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-gift-codes-for-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/shirt-ash-on-roblox-free-on-shirt-free-on-shop_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-no-human-verifica_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-dragon-ball-super-2-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-do-you-get-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-no-information_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-free-spins-link-2021-march_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_off00003275.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3275 22600 bytes
SHA-256: 6c2897f88bac147555a7131be5ca4fecf64d6a9788ab9f201a96e1b668c84df6
font_01_sfnt_off0000647d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x647D 18972 bytes
SHA-256: 2eaaad5678d01935b144c3c8451b70d33994b460386a5ed9108dc31f268e4efa

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