Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7d712301b4aacc7…

MALICIOUS

PDF

34.4 KB Created: 2021-07-09 05:33:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 6e8829feec26f0432e20a3036128e58b SHA-1: 17f27c671e7ed2fbdb8eabbacf2a91e225c44ac6 SHA-256: a7d712301b4aacc784dc978b75ec1029380ad07fd8c7737f5b74093398bdc527
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links, including one pointing to a known malicious redirector infrastructure at 'http://netcdn.tw/app/406889139/como-hackear-coin-master-ios-game-hack'. The document body and heuristics indicate a lure for game-related hacks, suggesting a phishing or malware distribution attempt. While no scripts were explicitly extracted, the nature of the links and the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic strongly suggest the intent is to redirect the user to a malicious site for further compromise.

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/como-hackear-coin-master-ios-game-hack In PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/coin-master-homepage_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/robux-hack-inspeccionar_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-roblox-gidt-cards_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/25-000-free-robux_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/how-to-earn-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/coin-master-free-coins-link-2021-deutsch_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/build-to-survive-zombie-free-roblox_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/comment-hacker-site-wwwrobuxgg_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/infinite-robux-hack-2021-sc_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/roblox-aimbot-hack_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/moonactive-coin-master_GM406889139.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-online-games-like-roblox_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/jamaica-roblox-free_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/how-to-hack-lola202198-roblox_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/free-roblox-exploit-download_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/how-to-hack-a-roblox-account-password-2021_GM431946152.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • http://uilis.unsyiah.ac.id/ebook/repository/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30B8 22912 bytes
SHA-256: 602bac39cbed4607953d74f8162328c78d802109d51cf648e4e364e7c6fa22eb
font_01_sfnt_off000063f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63F1 18264 bytes
SHA-256: ecc2f22dd7add67139421e5a5e4c2757ab90fcc09ead9e1721808ee65305dcba

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