Malicious PDF — malware analysis report

Static analysis result for SHA-256 6630a742a2f8ec92…

MALICIOUS

PDF

49.7 KB Created: 2021-06-11 02:11:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 963c71cbfa845b112ca2d207ca4880ac SHA-1: 808d426a670fd00403f7f2b0eaca1ea42d24231a SHA-256: 6630a742a2f8ec9286968e0c53dbe6fe160d8fb8271e289753992605719099ff
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a malicious redirector, disguised as a 'game hack' generator for Roblox. The primary link leads to a URL associated with known malicious infrastructure. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering attack designed to redirect users to potentially harmful content or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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 https://netcdn.tw/app/431946152/como-hackear-ropa-en-roblox-2021-game-hack In PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-hack-version-33-2_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/how-can-you-get-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/village-4-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-daily-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/pokemon-go-five-free-raid-passes_GM1094591345.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-hacks-for-cards_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/free-robux-picture_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-coin-spin-daily-link-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-avatar-free_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/robux-generator-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/minecraft-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/what-day-does-john-doe-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/free-roblox-codes_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-free-cards-link-2021_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005334.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5334 28352 bytes
SHA-256: 6b44c5256c6131833a35b8022e4704614c03fe11638d08b28a8496029dfcb922
font_01_sfnt_off0000934f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x934F 2844 bytes
SHA-256: baad2f3f6808f4af03fa9398e38c580c8d846f7f773a947d8cc1f39b2753d31a
font_02_sfnt_off00009d11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D11 19020 bytes
SHA-256: 5a27d9dc4eefdf371285f450342421a1ad4caeeb03ee98be6c68121196be4709

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