Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e64d168874fcdae…

MALICIOUS

PDF

35.5 KB Created: 2021-07-05 23:46:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: f62fd42c37802ec0e37cb3a85d017848 SHA-1: c278506b745bcf1f24815b933fa17bb27ec3433f SHA-256: 9e64d168874fcdaea872abdb44f3ecb6988f13877aa46d12ecf9a651f03b0437
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a critical heuristic firing for a game hack redirector lure, directing users to a known malicious URL. The document body also contains the same URL, reinforcing the malicious intent. The ML classifier also flagged this PDF with high confidence. While no scripts were extracted, the primary attack pattern involves tricking the user into visiting a malicious URL that likely leads to a malware download.

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/406889139/coin-master-hack-version-33-2-game-hack In PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-build-a-boat-for-treasure-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-how-to-get-any-gamepass-for-free-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-hack-client-april-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-hack-your-friends-account-in-roblox_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/eazy-was-how-to-hack-into-a-roblox-account_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-only-username_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-hack-pc_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-roblox-clothes_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-spins-and-coins-blogspot-coin-master_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/live-free-roblox-card_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-hack-a-roblox-account-on-ipad-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-free-100-spin-link_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-scam_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-get-frozen-hair-for-free-roblox_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-make-clothes-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-boombox-gear-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33DA 22980 bytes
SHA-256: afcf6c45ccb90833490561a34f07c0a8ccee7c209b79c635063bf74885efb043
font_01_sfnt_off00006770.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6770 18436 bytes
SHA-256: 40d4f265c6f80eacc067217a35f9691239ff8b0750ab836d6fc535a93aeb50a2

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