Malicious PDF — malware analysis report

Static analysis result for SHA-256 df6165e48f6e0685…

MALICIOUS

PDF

46.5 KB Created: 2021-05-11 05:43:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f427f79ddfea2570ab41feb076355a34 SHA-1: e81d6911c5d1ea363631a46a766b0988ae6a7e61 SHA-256: df6165e48f6e06859e5821bc7d4c73ab542249e2462a0b5f26d4daee0fbea79b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to malicious infrastructure, specifically advertising game hacks and free currency generators. The heuristic firings confirm these links lead to known malicious redirectors and lures for game-related scams. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or scamming attempt designed to lead users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/free-spins-coin-master-2021-today-game-hack In PDF document text
    • http://arkivthy.dk/images/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/free-robux-pins_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/minecraft-linux-free_GM479516143.pdfIn PDF document text
    • http://arkivthy.dk/images/how-to-get-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://arkivthy.dk/images/how-to-hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-jackpot-madness-hack_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/oprewards-com-robux_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/hack-game-plus-com-coin-master_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/minecraft-modded-client_GM479516143.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/static-moonactive_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/mcpe-free-download_GM479516143.pdfIn PDF document text
    • http://arkivthy.dk/images/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://arkivthy.dk/images/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/will-minecraft-ever-be-free_GM479516143.pdfIn PDF document text
    • http://arkivthy.dk/images/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000489a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x489A 28168 bytes
SHA-256: 8c544e6fd09b48a7ef72515c0d83a120d4b6cfda5f6f9efa4f0314927623f002
font_01_sfnt_off00008887.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8887 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00009239.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9239 18644 bytes
SHA-256: fb34871543d4e589edaa7b6b6daea61d4b413826d533968c66bf721badb2f47c

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