Malicious PDF — malware analysis report

Static analysis result for SHA-256 3aad8c6860f37b67…

MALICIOUS

PDF

35.0 KB Created: 2021-06-30 02:46:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: d1dec69487ceec9050ecbf19c9fe23d6 SHA-1: 30efcaf99a3a23bc7b3c12a19b21427913a0172c SHA-256: 3aad8c6860f37b674d52c1038e522a389593bafe2eea42b205f583ffbe155950
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one pointing to a known malicious redirector infrastructure, disguised as content related to 'game hacks' and 'free generators'. The document body and heuristics indicate a lure to download or access further malicious content, likely leading to a second-stage payload. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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/how-to-code-lua-roblox-hacking-game-hack In PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-app-free-download_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/roblox-redeem_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-free-spins-ios_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/daily-coin-master-free-spin-apk_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/bananaman2021-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-hacks-mas-fuertes_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-apk-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-watch-ads-for-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-spins-and-coins-com_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-free-spins-link-ios_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-online-multiplayer-games-like-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-get-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-rs-999-999-999-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-minecraft-com_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/hack-coin-master-dzooka_GM406889139.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_off000031df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31DF 22304 bytes
SHA-256: cf9273f406a5902b5d26e9926a4846a090ccfb2b65d879757ea4a5baa6256dde
font_01_sfnt_off00006319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6319 19256 bytes
SHA-256: e597db528cf2c62c969c092c7c642aff5a43b14f64932d3038a01b87034dba6a

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