Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc7ac7596f7c2d74…

MALICIOUS

PDF

46.4 KB Created: 2021-06-10 20:14:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0fea3dd867a65eb6652cdc5958aecb9b SHA-1: 69f3f519544928be27548cb66f18ed911dd5697e SHA-256: bc7ac7596f7c2d74e2d3f0385071032d4016fc70cadf3c26d233ae3dc1c26007
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector leading to a 'free generator / game hack' lure. The ML classifier also flagged this PDF as malicious. The presence of embedded URLs and the nature of the lure suggest a phishing or scam attempt, likely intended to lead users to further malicious content or compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

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 https://netcdn.tw/app/431946152/how-to-get-free-robux-seniac-game-hack In PDF document text
    • https://www.ocic.hr/files/coin-master-33-hack-version-download_GM406889139.pdfIn PDF document text
    • https://www.ocic.hr/files/roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.ocic.hr/files/free-spins-coin-master-links-thursday-november-28-2021_GM406889139.pdfIn PDF document text
    • https://www.ocic.hr/files/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ocic.hr/files/free-minecraft-generator_GM479516143.pdfIn PDF document text
    • https://www.ocic.hr/files/minecraft-xbox-free_GM479516143.pdfIn PDF document text
    • http://www.ocic.hr/files/how-to-get-roebucks_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.ocic.hr/files/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ocic.hr/files/get-roebucks-com_GM431946152.pdfIn PDF document text
    • http://www.ocic.hr/files/free-roblox-accounts-with-robux-august_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/10-robux_GM431946152.pdfIn PDF document text
    • https://www.ocic.hr/files/cm-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://www.ocic.hr/files/robux-free-co_GM431946152.pdfIn PDF document text
    • http://www.ocic.hr/files/www-free-robux_GM431946152.pdfIn PDF document text
    • http://www.ocic.hr/files/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://www.ocic.hr/files/coin-master-hack-dot-xyz_GM406889139.pdfIn PDF document text
    • https://www.ocic.hr/files/free-minecraft-server_GM479516143.pdfIn PDF document text
    • https://www.ocic.hr/files/coin-master-free-spins-cash_GM406889139.pdfIn PDF document text
    • https://www.ocic.hr/files/can-i-have-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004f0a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F0A 24384 bytes
SHA-256: 3c256c5706f7d87cc2ebc303cbcfc01b409c9c811e04d8e5c539beade9d0ddf5
font_01_sfnt_off00008721.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8721 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off00009130.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9130 18628 bytes
SHA-256: 789dd01e8e75cfd9d00466fa4bdf263c15bc1a8e6555c07a16c543110ff16126

Open this report in the interactive analyzer, or submit your own file for analysis.