Malicious PDF — malware analysis report

Static analysis result for SHA-256 14947e457aa53a8f…

MALICIOUS

PDF

34.5 KB Created: 2021-07-06 08:49:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 35f673b384ea656ecd164dc949f81fc6 SHA-1: 6cd52de294752ffe6fa94110453e5a314009a0e6 SHA-256: 14947e457aa53a8fc161696644b821ce8bb51e20e06a98b77bc60a390b909c47
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users into clicking on what appears to be a game hack or generator. The primary link, http://netcdn.tw/app/431946152/give-me-robux-game-hack, is identified as a malicious redirector. While no scripts were extracted, the document's structure and embedded URLs strongly suggest a phishing or scam attempt, likely leading to further malware download or credential harvesting.

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/431946152/give-me-robux-game-hack In PDF document text
    • http://stikespantirapih.ac.id/home/repository/cheat-in-mad-city-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/como-hackear-roblox-arsenal_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-get-free-hair-on-roblox-no-hack_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-verification_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-thinknoodles-free-fall-breaking-1-million_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/pubg-uc-free-link_GM1330123889.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/raindrop-hack-for-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-no-test-or-dowmload_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/can-you-get-arested-for-having-a-roblox-hacker-group_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/hack-script-for-all-simulators-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-download_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-today-2021_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-apk_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/cm-free-spin-link-today_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/www-rubux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/como-consegir-robux-gratis-sin-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E6F 22920 bytes
SHA-256: 6bb64dbb8005ec331ca841d1f9c32188544b641f00f67d7b0b11479ee2020e3f
font_01_sfnt_off000061b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61B3 18984 bytes
SHA-256: 4e46e4fba873faa5c118d7fc25cc80c06536480829301173d0374a806a09fbcf

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