Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5b6d4f46f240695…

MALICIOUS

PDF

42.3 KB Created: 2021-05-13 09:14:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a36dd349438437df446ca09b4699f3a3 SHA-1: 53069f65f153acd3300161b2a316c2dc16279653 SHA-256: d5b6d4f46f24069544df6bc6e750f9591eb78fbcb0828abe6ddeec0fcdfc945e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically advertising game hacks and generators for popular games like Roblox and Coin Master. The embedded URLs are designed to lure users into clicking, likely leading to further malicious content or downloads. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/431946152/roblox-tracker-game-hack In PDF document text
    • http://bildhauerei-roerig.de/images/minecraft-rtx-download-free_GM479516143.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/chisel-and-bits-mod-pe_GM479516143.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/game-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/free-roblox-com_GM431946152.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/minecraft-ps4-code-free_GM479516143.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/free-robux-stream_GM431946152.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/hack-coin-master-app_GM406889139.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/block-best-robux_GM431946152.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/hacks-para-coin-master_GM406889139.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/coin-master-cheat-free_GM406889139.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/free-robux-meme_GM431946152.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/free-limiteds-roblox_GM431946152.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://bildhauerei-roerig.de/images/how-to-cheat-in-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000488d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x488D 25172 bytes
SHA-256: 4cbab9b3248a28a1c5e30e552cd33828505680d6614706709c14a26fb77e3bf7
font_01_sfnt_off000082ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82ED 18184 bytes
SHA-256: 72f8522d23e1124dd8ed7fdd7308c58d02d03d2ede9b00fcb85fd7d8fd1c97df

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