Malicious PDF — malware analysis report

Static analysis result for SHA-256 22bf4dfd63a32a6a…

MALICIOUS

PDF

35.3 KB Created: 2021-07-04 02:43:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 7f770670519a4bf70f5db8ccc1c43030 SHA-1: c947ac8819bc62ae3290ddafb1f032f0be3826b1 SHA-256: 22bf4dfd63a32a6a08ecdd0e3d7470cd7ec434a97a52d0c4387d0cb34b0d486e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating it links to malicious redirectors and lures users with promises of game hacks. The primary embedded URL, http://netcdn.tw/app/431946152/robuxglobalcom-no-verification-game-hack, is identified as malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a social engineering attack designed to lead users to potentially harmful content.

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.tw/app/431946152/robuxglobalcom-no-verification-game-hack In PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/coin-master-hack-apk-with-fb-login_GM406889139.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/roblox-free-online-download_GM431946152.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/robux-game-com_GM431946152.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/coin-master-free-coins--spins_GM406889139.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/coin-master-generator-free_GM406889139.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/1-https-wwwrobloxcom-games-202120211-mortusrpgfreevip_GM431946152.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/earn-roblox-online-free_GM431946152.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/roblox-games-with-free-radio_GM431946152.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/my-roblox-avatar_GM431946152.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/download-roblox-on-computer-free_GM431946152.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/robloxfun-com-generator_GM431946152.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/se-puede-hackear-coin-master_GM406889139.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/how-get-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/triangle-head-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/learn-roblox-lua-free_GM431946152.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/roblox-phantom-forces-hack-aimbot_GM431946152.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • https://www.waymedicalsupplies.com/uploaded_files/userfiles/files/hypervenom-roblox-hack_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_off0000327b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x327B 22544 bytes
SHA-256: 3e9f14cfc79366c1e725d2cb646da61f58f346d2372c97180b02060bad86a180
font_01_sfnt_off0000648f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x648F 19244 bytes
SHA-256: 6b63eb57ff7f0570f867c922be0f3fd595e847af2b11a53457756d615b7e0fbe

Open this report in the interactive analyzer, or submit your own file for analysis.