Malicious PDF — malware analysis report

Static analysis result for SHA-256 8290b0e605bf70b0…

MALICIOUS

PDF

43.8 KB Created: 2021-05-15 01:49:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 101223e2be3695716e3437ee252f7e99 SHA-1: 0342bbfc4f66939ec5fcde6ede369e3efcd83cc5 SHA-256: 8290b0e605bf70b02d614911f3808a5d2d278d7f932c58dc00e35d2d509f3d22
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple links that redirect to known malicious infrastructure, specifically promoting 'free generator / game hack' lures. The document body and embedded URLs reinforce this theme, aiming to trick users into visiting potentially harmful sites. The ML classifier also strongly indicated maliciousness.

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-roblox-premium-game-hack In PDF document text
    • http://eooe.gr/images/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://eooe.gr/images/roblox-troll-outfits-free_GM431946152.pdfIn PDF document text
    • http://eooe.gr/images/get-coin-master-cards-free_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/legit-coin-master-hack-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/easy-points-gg_GM431946152.pdfIn PDF document text
    • http://eooe.gr/images/coin-master-daily-spin-link-app_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/coin-master-heaven_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/instantrobux_GM431946152.pdfIn PDF document text
    • http://eooe.gr/images/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
    • http://eooe.gr/images/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://eooe.gr/images/how-to-get-free-coins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://eooe.gr/images/monttechscom-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/free-private-minecraft-server_GM479516143.pdfIn PDF document text
    • http://eooe.gr/images/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/coin-master-free-spins-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/robux-place-rewards_GM431946152.pdfIn PDF document text
    • http://eooe.gr/images/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://eooe.gr/images/hacks-and-cheats-for-coin-master_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_off00004d4a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D4A 25164 bytes
SHA-256: 489197179d6f9649d7e1f1e23d9870f8d38b1a130be68e375aa439778f1499c3
font_01_sfnt_off00008785.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8785 18888 bytes
SHA-256: 3ba61bc9b3b11ac9a9f3633ee28239b24940f03e179bf58c89719787cf1740e7

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