Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee84f7d50d985e66…

MALICIOUS

PDF

48.4 KB Created: 2021-06-08 16:37:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 91c6ea4619e6aa9fa7d633789ca4b87b SHA-1: 795c6cf41a462314bed22b4330c84ddb519dbd73 SHA-256: ee84f7d50d985e66ce379fb565bd1aecbe6b89bae28ae1a3c14056eddf1e002c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free in-game currency, specifically 'Free Robux', which is a common tactic for phishing and scamming operations. The embedded link directs to a known malicious redirector infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.tw/app/431946152/free-robux-no-human-verafaciton-game-hack In PDF document text
    • http://zarinnameh.ir/images/minecraft-modded-client_GM479516143.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/coin-master-free-spins-link-blogspot-april-2021_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/how-to-hack-m-coins-mcpe-master_GM406889139.pdfIn PDF document text
    • http://zarinnameh.ir/images/how-to-get-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://zarinnameh.ir/images/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/how-to-get-free-followers-on-roblox_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/can-i-have-robux_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://zarinnameh.ir/images/free-minecraft-bedrock-server-hosting_GM479516143.pdfIn PDF document text
    • http://zarinnameh.ir/images/roblox-svg-free_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/roblox-moderators_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/minecraft-survival-free_GM479516143.pdfIn PDF document text
    • http://zarinnameh.ir/images/microsoft-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/pokemon-go-free-hack-download_GM1094591345.pdfIn PDF document text
    • http://zarinnameh.ir/images/how-to-get-free-roblox-hair_GM431946152.pdfIn PDF document text
    • http://zarinnameh.ir/images/80-free-spins-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
font_00_sfnt_off0000513e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x513E 27360 bytes
SHA-256: df833e3d6e8548df4b262f66e407f92db4c65e564ecd5d18d1ef563e138f9bc0
font_01_sfnt_off00008e97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E97 2816 bytes
SHA-256: 4555740682277f0055d57b15bd0ba953e5b51415ea3d21c93db391eace072d4f
font_02_sfnt_off000098a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98A7 18860 bytes
SHA-256: ca686b9865045255ffb72825c4e73b769a119dca7d7cd1a1a8959fe90f97660d

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