Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa102a71af0d41df…

MALICIOUS

PDF

46.2 KB Created: 2021-06-07 13:11:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1fe21ee4bae54bc56d3da686b5250b47 SHA-1: 61b195c06225eeb535dce1cee970699ec79977af SHA-256: fa102a71af0d41dfa36b550fcaaa4e139bf8674742cc2d4dcd60a5c7f144dd3b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple links to known malicious redirectors and lures users with the promise of game hacks. The embedded content, though obfuscated, suggests an attempt to download or redirect to further malicious content, likely a second-stage payload. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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/roblox-gui-hack-download-game-hack In PDF document text
    • http://force-seniorklub.dk/images/hacks-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/how-to-get-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://force-seniorklub.dk/images/how-to-make-a-server-in-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://force-seniorklub.dk/images/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/coin-master-free-spons-apk-2021_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/coin-master-gift-link-hack_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/pubg-uc-sale_GM1330123889.pdfIn PDF document text
    • http://force-seniorklub.dk/images/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/free-download-coin-master_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/free-dominus-roblox-javascript_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/tiktok-free-credit-card_GM835599320.pdfIn PDF document text
    • http://force-seniorklub.dk/images/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/my-minecraft-account-was-hacked_GM479516143.pdfIn PDF document text
    • http://force-seniorklub.dk/images/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/best-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://force-seniorklub.dk/images/how-pubg-uc-free_GM1330123889.pdfIn PDF document text
    • http://force-seniorklub.dk/images/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/is-minecraft-dungeons-free_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_004_off00005130.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5130 28052 bytes
SHA-256: 8c17cf0a692764c6db2463f94541a56e9380d769c15a1a68c438e72f06173185
font_01_sfnt_off00009015.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9015 18948 bytes
SHA-256: 4b2b817398413fe711e2a1f71243028ac1c55b0ec435a7c0335570b3b52930fc

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