Malicious PDF — malware analysis report

Static analysis result for SHA-256 7392dbe1f456a8ab…

MALICIOUS

PDF

33.9 KB Created: 2021-07-05 11:25:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 276b405b7cfe2e638c666467a188525b SHA-1: b76669866dd2cff44f4a5f45277209e1fe735a1b SHA-256: 7392dbe1f456a8ab2c1108d4cacfaff436c924c7f04f0af83129202a0bd6b9c4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a known malicious domain, masquerading as a free game hack generator. This lure is designed to entice users to click the link, likely leading to further malicious content or downloads. The ML classifier also strongly indicated maliciousness.

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/479516143/play-minecraft-free-online-no-download-game-hack In PDF document text
    • http://library.stieyapan.ac.id/repository/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/free-minecraft-printables-food-labels_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/beyon-roblox-tries-hack_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/mcpe-master-unlimited-coins-free-download_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/free-robux-reddit_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/getrobux-info_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/how-to-get-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/how-to-get-free-cards-sets-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/pubg-uc-generator-no-verification_GM1330123889.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-blogspot-links_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/hack-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/is-there-a-free-version-of-minecraft_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/best-tricks-co-robux_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-ios-hack_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-hack-ios_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/when-was-minecraft-free_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-roblox-gfx_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_off0000300e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x300E 22076 bytes
SHA-256: 236e9e7eef67ae5580981905fc236af5f2d1a082267c18c9c740711f849561a6
font_01_sfnt_off00005ffd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FFD 18912 bytes
SHA-256: 346cb213616b37d36555fcb51ba59473eedb80dae61f7accaa613951a8f90450

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