Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a4f1afe50a126a3…

MALICIOUS

PDF

27.5 KB Created: 2021-07-06 06:31:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: e2a96fa27acfb1c900967ab4c9460cc8 SHA-1: 0811bebef674ab8578bd9e029bada6899b5b4bb5 SHA-256: 7a4f1afe50a126a3b909e8f3a6db2acd78e2c81b0351458a1c0ab981608a1425
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a critical heuristic firing for a redirector lure, specifically mentioning a 'free generator / game hack'. The document body and embedded URLs reinforce this by pointing to similar game hack and generator content. The primary malicious URL identified is http://netcdn.tw/app/406889139/coin-master-hack-spin-generator-game-hack, which is likely the initial landing page for a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 3

  • 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.
  • 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-spin-generator-game-hack In PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/coin-mast-hacks_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-robux-app-for-roblox_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/redline-download-roblox-hack_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/wurst-115-2_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/coin-master-hack-without-root_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-free-spins-and-chips_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/comment-tlcharcher-un-cheat-sur-roblox-avec-explication_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/hack-para-tener-robux-2021_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/robux-prices_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/daily-coin-master-free-spin-link-facebook_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/how-to-hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/robux-giver_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/ro-ghoul-script_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/best-site-for-free-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/cm-spin-link_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/minecraft-116-1-download_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/make-your-own-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000034c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34C1 23488 bytes
SHA-256: 4430bd0bdb84dec8a4a6283c78a694df0eed91542020a98b05bfeac41ffcb9b6

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