Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fc6361ee14a8bd7…

MALICIOUS

PDF

33.4 KB Created: 2021-07-04 12:19:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 897c83553c2decab5d7b5746e37c5592 SHA-1: b656ab6f428f0c1512db777c9497d96c9de299fd SHA-256: 1fc6361ee14a8bd79cd1eef217f692200ceed84fb86793405a4c975cbb8038d9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, with a primary focus on 'game hacks' and 'free followers' for popular games like Roblox and Coin Master. The ML classifier strongly indicated maliciousness, and the PDF_GAME_HACK_REDIRECT_LURE heuristic confirms the deceptive nature of the content. The document's intent is to trick users into visiting these sites, which likely host scams or serve as downloaders for further malicious payloads.

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.tw/app/431946152/how-to-get-free-followers-on-roblox-game-hack PDF link annotation
    • http://lib.akpnbahtera.ac.id/repository/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-hack-no-survey-2021_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/password-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-hacked-apk-download-for-android_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/cute-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-fire-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/hack-a-game_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/baby-hacks-in-adopt-and-raise-a-baby-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/is-roblox-free-on-xbox_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/robux-best_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-game-free-download_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/how-to-get-free-spins-on-coin-master-android_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-links-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/blox-rewards_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/spin-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/robux-cash-free_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_off00002dad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DAD 21992 bytes
SHA-256: 0e9f7f2a1fc2c0ef8b051e5b5c2dcc5f3b21f92c1004eccf566e7b092fb0876d
font_01_sfnt_off00005dcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DCB 18920 bytes
SHA-256: f2fcdfdcf594b1f6c495eea0ecf7c0fb12bb31f20525b237f507cbd2c98efb4c

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