Malicious PDF — malware analysis report

Static analysis result for SHA-256 5081b6645e98c140…

MALICIOUS

PDF

42.6 KB Created: 2021-05-14 09:32:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5dbf641e8e391bfae4dc89b647030f1f SHA-1: d45596a94bea4fe45c486b3dd93b4d1c312aa33a SHA-256: 5081b6645e98c140f34715fe0ad812c26cb8bc5214df624fa66d2525c8fdfa3b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links that redirect to malicious infrastructure, specifically promoting game hacks and cheats. The heuristic firings confirm the presence of malicious redirectors and a lure for downloading content. Although no scripts were explicitly extracted, the document body and embedded URLs suggest a phishing or social engineering attack aiming to trick users into downloading potentially harmful files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/431946152/roblox-exploit-download-game-hack In PDF document text
    • http://apkmaykop.ru/images/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://apkmaykop.ru/images/coin-master-hack-pc-2021_GM406889139.pdfIn PDF document text
    • http://apkmaykop.ru/images/coin-master-free-stuff-links_GM406889139.pdfIn PDF document text
    • http://apkmaykop.ru/images/how-to-make-a-roblox-group-for-free_GM431946152.pdfIn PDF document text
    • http://apkmaykop.ru/images/free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • http://apkmaykop.ru/images/clean-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://apkmaykop.ru/images/roblox-play-as-guest-free_GM431946152.pdfIn PDF document text
    • http://apkmaykop.ru/images/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://apkmaykop.ru/images/coin-master-hack-no-verification-ios_GM406889139.pdfIn PDF document text
    • http://apkmaykop.ru/images/minecraft-112-2-hacked-client_GM479516143.pdfIn PDF document text
    • http://apkmaykop.ru/images/coun-master_GM406889139.pdfIn PDF document text
    • http://apkmaykop.ru/images/roblox-its-free_GM431946152.pdfIn PDF document text
    • http://apkmaykop.ru/images/robux-only_GM431946152.pdfIn PDF document text
    • http://apkmaykop.ru/images/win-free-robux_GM431946152.pdfIn PDF document text
    • http://apkmaykop.ru/images/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • http://apkmaykop.ru/images/coin-master-online-hack-generator_GM406889139.pdfIn PDF document text
    • http://apkmaykop.ru/images/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://apkmaykop.ru/images/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://apkmaykop.ru/images/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://apkmaykop.ru/images/mcpe-optifine_GM479516143.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
stream_003_off000049bd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49BD 24592 bytes
SHA-256: 3b52731fb72c5cafbdb5d050f927a80b65ee998f853d38a07026d19cbbab2086
font_01_sfnt_off000081d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81D1 18916 bytes
SHA-256: 7a24af39949c7ff71746b2c2809145b3ef2ee9bc5c7dad2d2497b06e0ed7f4c4

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