Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea6968c94f69d4e7…

MALICIOUS

PDF

34.4 KB Created: 2021-07-07 22:00:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 55c7c15275eefec902f4d07990313a59 SHA-1: 08015a7256d93cad6c3070643de8bbf2cba86eb3 SHA-256: ea6968c94f69d4e7cf38c2889216325e3da5004eddff6c19932a9251f024e742
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a known malicious redirector, disguised as a game hack generator. The document body and heuristics confirm the lure is for 'Roblox Robux Hack Generator' and 'game hack' content. The primary malicious URL identified is http://netcdn.tw/app/431946152/roblox-robux-hack-generator-game-hack, which is flagged as a malicious redirector.

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/roblox-robux-hack-generator-game-hack In PDF document text
    • https://www.awmedicine.com/uploaded_files/userfiles/files/minecraft-free-trial_GM479516143.pdfIn PDF document text
    • https://www.awmedicine.com/uploaded_files/userfiles/files/free-roblox-avatar-ideas_GM431946152.pdfIn PDF document text
    • https://www.awmedicine.com/uploaded_files/userfiles/files/free-robux-legi_GM431946152.pdfIn PDF document text
    • https://www.awmedicine.com/uploaded_files/userfiles/files/free-roblox-accounts-dantdm_GM431946152.pdfIn PDF document text
    • https://www.awmedicine.com/uploaded_files/userfiles/files/roblox-free-item-codes_GM431946152.pdfIn PDF document text
    • https://www.awmedicine.com/uploaded_files/userfiles/files/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.awmedicine.com/uploaded_files/userfiles/files/roblox-free-download-linux_GM431946152.pdfIn PDF document text
    • https://www.awmedicine.com/uploaded_files/userfiles/files/roblox-vehicle-simulator-free-gamepass-script_GM431946152.pdfIn PDF document text
    • https://www.awmedicine.com/uploaded_files/userfiles/files/coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.awmedicine.com/uploaded_files/userfiles/files/coin-master-event-hack_GM406889139.pdfIn PDF document text
    • https://www.awmedicine.com/uploaded_files/userfiles/files/free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.awmedicine.com/uploaded_files/userfiles/files/how-to-change-your-name-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.awmedicine.com/uploaded_files/userfiles/files/free-minecraft-shaders_GM479516143.pdfIn PDF document text
    • https://www.awmedicine.com/uploaded_files/userfiles/files/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.awmedicine.com/uploaded_files/userfiles/files/how-to-make-a-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • https://www.awmedicine.com/uploaded_files/userfiles/files/who-hacked-jaydee-854-roblox_GM431946152.pdfIn PDF document text
    • https://www.awmedicine.com/uploaded_files/userfiles/files/comoponerse-hacks-en-roblox_GM431946152.pdfIn PDF document text
    • https://www.awmedicine.com/uploaded_files/userfiles/files/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • https://www.awmedicine.com/uploaded_files/userfiles/files/roblox-backgrounds-its-free_GM431946152.pdfIn PDF document text
    • https://www.awmedicine.com/uploaded_files/userfiles/files/minecraft-for-ipad-free_GM479516143.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_off000030d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30D7 22048 bytes
SHA-256: 7f36af0f80b481d49d24def6fcd1ee9d92badb943b43d931ad28341134d2bcd2
font_01_sfnt_off0000619d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x619D 18900 bytes
SHA-256: e419110d4009e271ea11aee689c1aa7fe2ca079d33d0815bd6a59eb0f8b0c4e6

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