Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b8977032362605f…

MALICIOUS

PDF

43.6 KB Created: 2021-05-13 05:02:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f267b47fe24ed1dcd211819f28950fd8 SHA-1: 05152a7c28fc69416623da377830042f4718497c SHA-256: 4b8977032362605f02b7f0110a9d4f4ce0ad7ab0dbed88ed23f257aa5df94355
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that point to known malicious redirector infrastructure, specifically targeting users with lures related to game hacks and free currency. The heuristic firings confirm the presence of malicious redirector links and a lure for game hacks. While no scripts were explicitly extracted, the document's structure and embedded URLs suggest an attempt to redirect users to potentially malicious websites for phishing or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/how-to-get-free-roebucks-on-roblox-game-hack In PDF document text
    • http://indotec.fr/images/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://indotec.fr/images/coin-master-download-hack_GM406889139.pdfIn PDF document text
    • http://indotec.fr/images/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • http://indotec.fr/images/roblox-robux_GM431946152.pdfIn PDF document text
    • http://indotec.fr/images/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • http://indotec.fr/images/free-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://indotec.fr/images/coin-master-free-spins-link-no-verification_GM406889139.pdfIn PDF document text
    • http://indotec.fr/images/coin-master-hack-review_GM406889139.pdfIn PDF document text
    • http://indotec.fr/images/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://indotec.fr/images/blox-rewards_GM431946152.pdfIn PDF document text
    • http://indotec.fr/images/need-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://indotec.fr/images/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://indotec.fr/images/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://indotec.fr/images/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • http://indotec.fr/images/coin-master-free-spins-usa-2021_GM406889139.pdfIn PDF document text
    • http://indotec.fr/images/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://indotec.fr/images/blox-fun-info_GM431946152.pdfIn PDF document text
    • http://indotec.fr/images/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • http://indotec.fr/images/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • http://indotec.fr/images/rbx-earn_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004651.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4651 28568 bytes
SHA-256: ddd52a1f6868ae8ee92de15ee2086a7d044799c5ad2ca02156d7cb5edb7ea418
font_01_sfnt_off00008739.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8739 18524 bytes
SHA-256: b7643ab87c6ede69648f322cd81a197be2475f7126f117e622ee98ccb7431d7c

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