Malicious PDF — malware analysis report

Static analysis result for SHA-256 64152725cf64f781…

MALICIOUS

PDF

45.1 KB Created: 2021-05-15 14:26:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: db295d0336815f266760f65c094445bb SHA-1: d24c141bdf51240e097a116d34e7568df24e18bc SHA-256: 64152725cf64f781c49b7226f2bbc0fa60eda349cbc754d4d7645c8c370fd366
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically advertising free game hacks and accounts. The document body and extracted URLs indicate a lure for users interested in obtaining in-game currency or items, which is a common social engineering tactic. The presence of multiple redirector links suggests a campaign to drive traffic to potentially malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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/479516143/free-minecraft-account-and-password-2021-game-hack In PDF document text
    • http://osteonad.com/images/coin-master-free-coins-app_GM406889139.pdfIn PDF document text
    • http://osteonad.com/images/20210-robux_GM431946152.pdfIn PDF document text
    • http://osteonad.com/images/coin-master-game-hack_GM406889139.pdfIn PDF document text
    • http://osteonad.com/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://osteonad.com/images/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://osteonad.com/images/free-robux-obby_GM431946152.pdfIn PDF document text
    • http://osteonad.com/images/minecraft-book-collection_GM479516143.pdfIn PDF document text
    • http://osteonad.com/images/coin-master-free-spin-app-reviews_GM406889139.pdfIn PDF document text
    • http://osteonad.com/images/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://osteonad.com/images/coin-master-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://osteonad.com/images/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://osteonad.com/images/coin-master_GM406889139.pdfIn PDF document text
    • http://osteonad.com/images/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://osteonad.com/images/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://osteonad.com/images/how-to-get-free-gold-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • http://osteonad.com/images/20-free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://osteonad.com/images/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • http://osteonad.com/images/roblox-sign-in-free_GM431946152.pdfIn PDF document text
    • http://osteonad.com/images/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
    • http://osteonad.com/images/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048c2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48C2 25248 bytes
SHA-256: adc219ae5c95e52b922b1e401cc447fdaa891a6b8b745db706f673f703163963
font_01_sfnt_off000081bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81BC 3092 bytes
SHA-256: 3811f2fb1880daf4953efcc9c7427d9b438bced237490b00be4a6ec3ecea79e0
font_02_sfnt_off00008c67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C67 18744 bytes
SHA-256: 32e597d278032ff7c82e1179504235c91567bf80b74fa8ae34959daeb6a42353

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