Malicious PDF — malware analysis report

Static analysis result for SHA-256 77008b59ca470eac…

MALICIOUS

PDF

44.9 KB Created: 2021-05-12 16:30:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c86a1a7e620bc3fbc8f2ee9b8d5003f0 SHA-1: 790a643ec27d400e6677160ba629cc197f3a1a03 SHA-256: 77008b59ca470eac667f2d8673acaa87f7161a3ec1e215019b6185d82e5b71dc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting game-related cheats and hacks. The heuristic firings confirm the presence of malicious redirector links and a lure for game hacks. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to drive users to malicious websites, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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-spins-daily-game-hack In PDF document text
    • http://yardfon.go.th/images/roblox-points_GM431946152.pdfIn PDF document text
    • http://yardfon.go.th/images/minecraft-pocket-edition-mods-for-free_GM479516143.pdfIn PDF document text
    • http://yardfon.go.th/images/coin-master-free-spins-link-quora_GM406889139.pdfIn PDF document text
    • http://yardfon.go.th/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://yardfon.go.th/images/gold-cards-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://yardfon.go.th/images/free-spins-and-coins-com_GM406889139.pdfIn PDF document text
    • http://yardfon.go.th/images/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://yardfon.go.th/images/1x1x1x1-roblox-id_GM431946152.pdfIn PDF document text
    • http://yardfon.go.th/images/game-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://yardfon.go.th/images/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • http://yardfon.go.th/images/mcpe-free-download_GM479516143.pdfIn PDF document text
    • http://yardfon.go.th/images/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://yardfon.go.th/images/coin-master-hack-ios-no-verification_GM406889139.pdfIn PDF document text
    • http://yardfon.go.th/images/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://yardfon.go.th/images/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://yardfon.go.th/images/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://yardfon.go.th/images/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • http://yardfon.go.th/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://yardfon.go.th/images/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://yardfon.go.th/images/free-spins-coin-master-october-13-2021_GM406889139.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_off00004a49.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A49 24672 bytes
SHA-256: c9af2079eb1fdaceb4902c101e35e39712c5e247131f3538eab8857a39edda52
font_01_sfnt_off000082cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82CD 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008cb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CB7 18308 bytes
SHA-256: 220bb6194b1ab8a2bb399ca4a862914ac8d15b354bb0df2c737bc67699221dc9

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