Malicious PDF — malware analysis report

Static analysis result for SHA-256 063e75ec774aed6e…

MALICIOUS

PDF

43.5 KB Created: 2021-06-08 11:46:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 0f2b353197a45032d06ded3977761814 SHA-1: ebe69505944314b40bf31a106ad436b03d3a8abc SHA-256: 063e75ec774aed6e6fac071fc18aa28408eb35197dfb021431fb6bc281e47909
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as free game hacks and generators. The document body and embedded URLs strongly suggest a lure for users seeking in-game currency or cheats. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or scam attempt, likely leading to further malicious content or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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 https://netcdn.tw/app/431946152/muscle-roblox-manequin-free-game-hack In PDF document text
    • http://reggieslockandkey.com/images/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/roblox-18_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/tiktok-free-movie-website_GM835599320.pdfIn PDF document text
    • https://reggieslockandkey.com/images/roblox-robux-game-cheat_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-coins-for-flip-master_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/freespinandcoin-blogspot-coin-master_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/minecraft-mac-free_GM479516143.pdfIn PDF document text
    • https://reggieslockandkey.com/images/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-get-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • https://reggieslockandkey.com/images/coin-master-spin-and-coins-free_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/mine-minecraft-games-for-free_GM479516143.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-get-minecraft-for-free-on-mobile_GM479516143.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-minecraft-addons_GM479516143.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_off00004a69.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A69 26512 bytes
SHA-256: 471aef7d0676adcbe1d5b7d2ca5cd72d5551b373163f21c8d8ac43465720a3fd
font_01_sfnt_off00008699.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8699 18804 bytes
SHA-256: 6cac3bf74fe2adb1fb40ee54dac3e35325e1daf0dcab308d7ed655191e2ae3c4

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