Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fc9392184729c4b…

MALICIOUS

PDF

35.3 KB Created: 2021-07-04 04:40:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 29cb58470e6fa4c8d8f4abbd7fba07d3 SHA-1: cd7e758bffc2e2a047654f4964922184606ea82c SHA-256: 4fc9392184729c4b58d2bc63ccfa3193259d544feb7d4a51c6316889b7af4965
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game items and cheats to entice users to click on 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 URLs strongly suggest a phishing or scamming attempt, potentially leading to malware delivery.

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/406889139/100-free-spins-coin-master-game-hack In PDF document text
    • https://jdclassicautoparts.com/image/data/files/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/bux-free-robux_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/how-to-hack-roblox-games-and-to-run-fast_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/coin-master-free-spins-today-39_GM406889139.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/roblox-cp_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/free-followers-for-tiktok_GM835599320.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/free-robux-now_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/archery-master-3d-hack-unlimited-coins-cheats_GM406889139.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/free-spins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/roblox-free-robux-just-give-me-your-password_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/how-can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/coin-master-free-coins-hack_GM406889139.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://jdclassicautoparts.com/image/data/files/can-you-download-minecraft-for-free_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_off000033a3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33A3 22792 bytes
SHA-256: d3bea7891faf90bb506fdbde9c4a4e9c3951b8d42d72649a19e5ff2f67106a18
font_01_sfnt_off000066bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66BF 18452 bytes
SHA-256: d0c04ff51ad59f6355ad4f24aeb86ad145506544650f67de66568f082738138f

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