Malicious PDF — malware analysis report

Static analysis result for SHA-256 677ecb9b956a578e…

MALICIOUS

PDF

33.5 KB Created: 2021-06-28 10:57:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 54b5c7fd6625fe6069b8ca73cad24f9b SHA-1: 9e928cd692f169d9f2cd8fc43b1929f97b247b6c SHA-256: 677ecb9b956a578e0f4db90fbdf18e36f7a9beeaf630c27a8938fee8e87dd6a0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one pointing to known malicious redirector infrastructure, designed to lure users with promises of free game currency or hacks. The document body and heuristics indicate a scam or phishing attempt, likely leading to further malware download or credential harvesting. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/how-to-get-2021-robux-for-free-2021-game-hack In PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/roblox-windows-10-free-download_GM431946152.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/how-to-get-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/freespincoin-masterlinkdownload_GM406889139.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/free-minecraft-account-generator_GM479516143.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/coin-master-hack-apk-35-11_GM406889139.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/roblox-project-pokemon-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/script-hack-2021-roblox-bubble-gum-simulator_GM431946152.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/fre-robux-fro-reallllllll_GM431946152.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/admin-ofc-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/more-robux_GM431946152.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/coin-master-link_GM406889139.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/how-to-make-a-minecraft-client_GM479516143.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/dungeon-quest-roblox-hack-script_GM431946152.pdfIn PDF document text
    • http://www.agasrestaurant.com/uploaded_files/userfiles/files/free-neon-district-terrian-dowload-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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
font_00_sfnt_off00002c0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C0E 22084 bytes
SHA-256: 9c9c47b87aa7b143b3b66508c125a3000c295dbb58a378866d7bc04776255fd5
font_01_sfnt_off00005d33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D33 19384 bytes
SHA-256: d24c0e100c944da15398cc03dd439e143cfc9f9497013523985f2333f6259ff5

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