Malicious PDF — malware analysis report

Static analysis result for SHA-256 d796618d00d0147d…

MALICIOUS

PDF

33.3 KB Created: 2021-06-30 06:41:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 268c0c67424dc553f5e84706f9b9d331 SHA-1: b11fe256c65920a833dcfe91cba378a8f021ee5d SHA-256: d796618d00d0147da60fc3705013b01f6e3c4ed6115c1d579b9f7abffbb0f23b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one identified as a malicious redirector pointing to 'http://netcdn.co/app/431946152/spin-hack-roblox-game-hack'. This lure, combined with the 'free generator / game hack' context, strongly suggests a phishing or scam attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a malicious workflow designed to redirect users to potentially harmful content.

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.co/app/431946152/spin-hack-roblox-game-hack In PDF document text
    • http://library.yamasi.ac.id/repository/rewards-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/latest-free-spin-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-e-free_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/earn-points-for-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/https-webrobloxcom-catalog-202120217-ninjaanimationpackage-free_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/cool-kids-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/todays-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-cheat-engine-does-not-work_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/ninja-legends-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/get-pokemon-go-free-coins_GM1094591345.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-forum-hack_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/is-it-possible-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/robux-miner_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-retail-tycoon-cheat-engine_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-hack-prison-royale_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_off00002eaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EAA 21460 bytes
SHA-256: 6bef986bd0e32cee190f096289fe5520419437a2641b3c97ca32becdd8fdd54f
font_01_sfnt_off00005d59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D59 18952 bytes
SHA-256: 37b6807048432a834e457187932fe4d54d63d9a2a4e3f8f03d253c4e17537ed5

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