Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce7fc34540ec96f6…

MALICIOUS

PDF

33.7 KB Created: 2021-07-06 23:01:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: e7bc57d9e281dde6d513390477b5a733 SHA-1: 02d7effd9fbe4124bcd3f33ff58a7676ecd8ba4e SHA-256: ce7fc34540ec96f64f7fb4e56f7fabe2f6671976a7c07794727d83d2a81944fb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game currency and hacks to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or downloads. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to potentially harmful websites.

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-gold-cards-free-game-hack In PDF document text
    • http://mb-alati.hr/files/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://mb-alati.hr/files/coin-master-free-pet-food_GM406889139.pdfIn PDF document text
    • https://www.mb-alati.hr/files/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
    • https://www.mb-alati.hr/files/free-robux-fast-and-easy-2021_GM431946152.pdfIn PDF document text
    • https://www.mb-alati.hr/files/free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://mb-alati.hr/files/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.mb-alati.hr/files/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://mb-alati.hr/files/aroboy-10-hacker-roblox_GM431946152.pdfIn PDF document text
    • https://www.mb-alati.hr/files/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://mb-alati.hr/files/wurst-115_GM479516143.pdfIn PDF document text
    • https://www.mb-alati.hr/files/roblox-phantom-forces-hack-dll_GM431946152.pdfIn PDF document text
    • http://mb-alati.hr/files/ccv3-roblox-jailbreak-speed-hack_GM431946152.pdfIn PDF document text
    • https://www.mb-alati.hr/files/coin-master-firebird-card-free_GM406889139.pdfIn PDF document text
    • https://www.mb-alati.hr/files/free-robux-earning-website_GM431946152.pdfIn PDF document text
    • http://mb-alati.hr/files/official-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://mb-alati.hr/files/robux-cheat_GM431946152.pdfIn PDF document text
    • http://mb-alati.hr/files/coin-master-heaven-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://mb-alati.hr/files/new-free-robux-roblox-promocode-gives-50m_GM431946152.pdfIn PDF document text
    • http://mb-alati.hr/files/free-robux-picture_GM431946152.pdfIn PDF document text
    • https://www.mb-alati.hr/files/rbx-get-free-robux_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
stream_002_off00002ed2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2ED2 22548 bytes
SHA-256: ef7c4badc0c77b5b0ea9a0470a9d801cb752e1ba56ecee7345d64703fe6e2d4a
font_01_sfnt_off000060e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60E9 18244 bytes
SHA-256: 48a6224546dace306e4a963a80d10831842d0a6556a08514189d512710164b26

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