Malicious PDF — malware analysis report

Static analysis result for SHA-256 8da6fb35e92d8b2b…

MALICIOUS

PDF

44.5 KB Created: 2021-05-11 17:00:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cec16f3ecc04d3de5f479b4705726c37 SHA-1: 5afcc3d8ade7fa5ac395f608b309e4ddb97cda41 SHA-256: 8da6fb35e92d8b2b34e4103b94fa9b28befe136203c74bba1f03f78d4565a031
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to known malicious infrastructure, specifically promoting game hacks and free currency. The heuristic firings confirm these links are associated with malicious redirectors and lure tactics. While no scripts were directly extracted, the document's structure and embedded URLs strongly suggest it's designed to trick users into visiting malicious sites, likely as a precursor to further compromise or scams.

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-gift-cards-game-hack In PDF document text
    • http://pia2000.net/images/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/roblox-bux-free_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/free-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/coin-master-gold-cards-hack-2021_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/100-free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/coin-master-daily-link_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/free-gifts-coin-master_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • http://pia2000.net/images/minecraft-apk-android-free_GM479516143.pdfIn PDF document text
    • http://pia2000.net/images/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/minecraft-free-android_GM479516143.pdfIn PDF document text
    • http://pia2000.net/images/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/noob-vs-pro-vs-hacker-vs-god-minecraft_GM479516143.pdfIn PDF document text
    • http://pia2000.net/images/freespinandcoin-blogspot-com_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://pia2000.net/images/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pia2000.net/images/free-daily-spins-from-coin-master_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_off0000488b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x488B 25368 bytes
SHA-256: 04b6f9e7ea8303263d77cb283e6e93f46b5027d4bfe2299fe4c15ea150481b8c
font_01_sfnt_off000082c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82C3 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008cae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CAE 17884 bytes
SHA-256: 1b54ec21ee4dc5c6875d1e8706b9f848bdb88ccbf1458105623327cd7a4376f0

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