Malicious PDF — malware analysis report

Static analysis result for SHA-256 d22842fa2036cd2e…

MALICIOUS

PDF

42.5 KB Created: 2021-05-16 02:31:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6e8d4a46c08c9b511519d2148f8e00fc SHA-1: d604d5ca6e551253fc8a3c15104387bd95ab37b4 SHA-256: d22842fa2036cd2e76b51e4c8a4d545bd5175237b6074b6795375e25bcf16ee8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that are flagged as malicious redirectors, specifically luring users with promises of game hacks and free currency. The document body, though partially corrupted, contains similar lures and embedded URLs. The primary malicious activity observed is the redirection to potentially harmful websites via these links.

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/406889139/coin-master-free-spin-and-coin-link-app-game-hack In PDF document text
    • http://www.friendshiptransport.net/images/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/how-to-get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/coin-master-hack-spin-ios_GM406889139.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/coin-master-coin-hack_GM406889139.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/coin-master-free-link-daily_GM406889139.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/coin-master-hack-fast_GM406889139.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/hack-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/login-robux_GM431946152.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/how-to-get-free-cards-sets-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/roblox-com-r_GM431946152.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/coin-master-free-spins-link-ios_GM406889139.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/free-coins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.friendshiptransport.net/images/free-spins-for-coin-master-2021_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_off00004af2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AF2 24676 bytes
SHA-256: d5ba9c3e5c064d72a77c81da571a55631565893e97f1d3c3c8ebc165d0d839da
font_01_sfnt_off000083c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83C6 18228 bytes
SHA-256: ab1c4cdc214a6baf81a15e2f62a40ea9cfbbbf407f0f3dd1c7564e467cf0dae2

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