Malicious PDF — malware analysis report

Static analysis result for SHA-256 785008e9d78159f5…

MALICIOUS

PDF

46.5 KB Created: 2021-05-16 02:07:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 57e11e12e3c41607a885b640d30cceb2 SHA-1: afa846116fa9fe668ff29d45601418daa692f575 SHA-256: 785008e9d78159f5f36705a0f3a5123c40aba5f4232f5f5fbcb5d1f985ef8f80
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple links to known malicious redirectors and lures users with promises of free game items. The primary redirector URL is https://netcdn.xyz/app/406889139/free-game-packs-for-coin-master-game-hack, which is associated with a high number of other malicious links. The document body, though partially corrupted, contains similar lures and additional URLs pointing to potentially malicious PDF files. No scripts were extracted, but the presence of multiple malicious links and the ML classifier's high confidence indicate a malicious intent to redirect users to harmful content.

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-game-packs-for-coin-master-game-hack In PDF document text
    • http://bob-reid.co.uk/uploads/files/files/how-do-you-get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/httpswwwurcouponsdealcom202103coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/how-to-get-coin-master-card-free_GM406889139.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/free-outfits-roblox_GM431946152.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/roblox-avatar-com_GM431946152.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/free-spins-coin-master-without-survey_GM406889139.pdfIn PDF document text
    • http://bob-reid.co.uk/uploads/files/files/claimrbx-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_off00004dd3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DD3 26284 bytes
SHA-256: 0ae130b324c02900cece4d2a6e5fa1816fbf9094e47fb689be2eccdc04922ff9
font_01_sfnt_off00008992.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8992 2868 bytes
SHA-256: d2d857e2ddc1082c7667b23f2135a5c0ba26a2ff8b42c86c89c8e0b09aece855
font_02_sfnt_off0000937c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x937C 18292 bytes
SHA-256: 588be6712b52f4dc3b6c5b8e7dc29f20d8b81f22195d0114e9c785dd726d1321

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