Malicious PDF — malware analysis report

Static analysis result for SHA-256 c96d14a9aed862d1…

MALICIOUS

PDF

34.7 KB Created: 2021-06-28 23:44:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 7e10bb33bacb854b6e8f254069ba4680 SHA-1: 096d6db440dd58f472a8a23b1fbd1bebff060212 SHA-256: c96d14a9aed862d1fd85c100ff01fde5219cb940010c6b2023fc08841dd60637
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free in-game currency and game hacks to trick users into clicking malicious links. The document contains multiple embedded URLs, including a primary redirector at http://netcdn.co/app/431946152/roblox-free-roblox-cards-2021-game-hack, which is flagged as malicious. The presence of a visual download button further supports the deceptive nature of the document. No scripts were extracted, but the document's structure and embedded links strongly indicate a phishing or scam attempt.

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/roblox-free-roblox-cards-2021-game-hack In PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/robux-hack-no-human-verification-2021-no-download_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/roblox-survey-for-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/mcpe-client_GM479516143.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/make-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/www-coin-master-hack-com_GM406889139.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/minecraft-items_GM479516143.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/roblox-free-exploits_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/rape-simulator_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox-2021-with-proof_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/minecraft-rtx-download-free_GM479516143.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/free-spins-and-coins-coin-master-app_GM406889139.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/roblox-how-to-use-cheat-engine_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/pubg-uc-sale_GM1330123889.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 3

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_off00002f92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F92 22560 bytes
SHA-256: 4920d947da0e90d0e44a6ead7d9fe189a3233565428a7ddbe6042e790ec76eb9
font_01_sfnt_off000061f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61F5 19228 bytes
SHA-256: 86b53f3703af026871a7ed8ccc2666ff340978224c012ce5f7d628160cb8c6a3

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