Malicious PDF — malware analysis report

Static analysis result for SHA-256 a922fc031a719e4e…

MALICIOUS

PDF

43.6 KB Created: 2021-05-18 03:51:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: adc2a27a249c0bf9f81964ba4f6e27f2 SHA-1: 2a7141a43e9260433e851a98c04d21a636a9dcff SHA-256: a922fc031a719e4ebffa898500b29c6fbf026c6d20609829655b587efc262443
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to redirector domains and known malicious infrastructure, disguised as game hacks and free currency generators. The ML classifier also strongly indicated maliciousness. These links likely lead to further malicious content or exploit kits, aiming to trick the user into downloading or executing additional payloads.

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/406889139/coin-master-free-spins-16-04-19-game-hack In PDF document text
    • http://vagency.us/images/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://vagency.us/images/coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://vagency.us/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://vagency.us/images/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://vagency.us/images/coin-master-hack-ios-without-verification_GM406889139.pdfIn PDF document text
    • http://vagency.us/images/dailyrobux_GM431946152.pdfIn PDF document text
    • http://vagency.us/images/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://vagency.us/images/how-to-make-a-modded-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://vagency.us/images/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://vagency.us/images/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://vagency.us/images/free-roblox-executor-no-key_GM431946152.pdfIn PDF document text
    • http://vagency.us/images/getrobux-info_GM431946152.pdfIn PDF document text
    • http://vagency.us/images/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://vagency.us/images/coinmaster-spin-ml-link_GM406889139.pdfIn PDF document text
    • http://vagency.us/images/robux-game-com_GM431946152.pdfIn PDF document text
    • http://vagency.us/images/google-how-do-you-get-robux_GM431946152.pdfIn PDF document text
    • http://vagency.us/images/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://vagency.us/images/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://vagency.us/images/minecraft-education-edition-free-download_GM479516143.pdfIn PDF document text
    • http://vagency.us/images/free-spin-coin_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
stream_003_off00004a2d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A2D 26472 bytes
SHA-256: 9b20f048dbe435d38a5112e26c2c7f437bea92a12e6b6f39cabfe51b4406e7e6
font_01_sfnt_off0000873c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x873C 18560 bytes
SHA-256: a0bbfc082f98783fdd447455211163ff4a121f10355b931e3c7b5c7609f08a4a

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