Malicious PDF — malware analysis report

Static analysis result for SHA-256 49e11e15e55b7680…

MALICIOUS

PDF

32.4 KB Created: 2021-07-20 07:23:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 7baca10f6a197a557516dd3cb001f398 SHA-1: 7efe3b54d36d20d5a21159e441e3cd9e21ad1f98 SHA-256: 49e11e15e55b76801ae3adaaf547d41ad96e9ec10e25e78fdf75e435901749d7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links, including one pointing to known malicious redirector infrastructure at http://netcdn.tw/app/431946152/how-to-get-free-robux-without-paying-game-hack. The document body and embedded links suggest a lure for free game currency or hacks, a common social engineering tactic. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of user redirection to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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/431946152/how-to-get-free-robux-without-paying-game-hack In PDF document text
    • http://simon-skov-fougt.dk/billeder/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/how-to-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/minecraft-multiplayer-free_GM479516143.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/free-robux-games-that-actually-work_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_off0000266b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x266B 22356 bytes
SHA-256: 83f8fa101f68b3748e03b7c3d501306adeda0088819be61825450adae6563d98
font_01_sfnt_off000057ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57FF 19800 bytes
SHA-256: 7a6bd967609fefc341f6a7ddde603ef8f20ee52d1249beb676f1778a37673d9e

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