Malicious PDF — malware analysis report

Static analysis result for SHA-256 8734a3568b76a374…

MALICIOUS

PDF

34.4 KB Created: 2021-06-18 15:32:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 56699b48a4aa387df02bb12b60a06c46 SHA-1: adc23a12bbdc01e5dd19a509f28224eb0b4079b7 SHA-256: 8734a3568b76a374f9e0e03780420ad85327e593d5e175d9c0bb6723a22beed1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that lead to a known malicious redirector, disguised as a generator for game hacks and in-game currency. The document body and heuristics indicate a lure for free game items, which is a common social engineering tactic to drive users to malicious sites. No scripts were extracted, but the primary malicious functionality relies on the embedded URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/roblox-semi-transparent-pants-free-game-hack In PDF document text
    • https://dr-willmer.de/images/clean-master-coins-hack_GM406889139.pdfIn PDF document text
    • https://dr-willmer.de/images/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://dr-willmer.de/images/get-me-free-robux_GM431946152.pdfIn PDF document text
    • https://dr-willmer.de/images/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • https://dr-willmer.de/images/coin-master-free-spins-and-coins-group_GM406889139.pdfIn PDF document text
    • https://dr-willmer.de/images/coin-master-hack-unlimited-spins-and-coins-cheats_GM406889139.pdfIn PDF document text
    • https://dr-willmer.de/images/freespinandcoin-blogspot_GM406889139.pdfIn PDF document text
    • https://dr-willmer.de/images/how-many-levels-in-coin-master_GM406889139.pdfIn PDF document text
    • https://dr-willmer.de/images/all-free-rthro-roblox_GM431946152.pdfIn PDF document text
    • https://dr-willmer.de/images/free-robux-place_GM431946152.pdfIn PDF document text
    • https://dr-willmer.de/images/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
    • https://dr-willmer.de/images/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://dr-willmer.de/images/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • https://dr-willmer.de/images/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • https://dr-willmer.de/images/wewgaming-hack-roblox_GM431946152.pdfIn PDF document text
    • https://dr-willmer.de/images/haktuts-coin-master-today_GM406889139.pdfIn PDF document text
    • https://dr-willmer.de/images/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • https://dr-willmer.de/images/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://dr-willmer.de/images/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • https://dr-willmer.de/images/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002cf1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2CF1 23040 bytes
SHA-256: ef80abb37713bae5d536087dbf2a9307130de79dc6ce7da837e86ad8e2a3f360
font_01_sfnt_off000060fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60FA 19280 bytes
SHA-256: 0a0ca7ceb9dcf5a7b2e9db4cefa4afca3fdfd07536254574a1d58eb0edda8ffb

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