Malicious PDF — malware analysis report

Static analysis result for SHA-256 79c5ab694ead84fd…

MALICIOUS

PDF

34.4 KB Created: 2021-06-30 15:47:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: c91808dec9747250b61414b2c36cca76 SHA-1: 4b83308901973c605c2b026a3a5e07179a87f023 SHA-256: 79c5ab694ead84fdbd430ade1dea5db7992530ec3453c4fae444339281a1a82b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free currency to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which in turn hosts multiple other malicious PDFs. The document body and heuristics indicate a clear intent to lead the user to potentially harmful content, likely for further exploitation or malware delivery.

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-hack-gui-tutorial-game-hack In PDF document text
    • http://muslib.unmus.ac.id/repository/bux-fund-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/guuudinfo-robux-hacks_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/5-roblox-edit-this-cookie-hacks_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-hack-people-item-in-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-rare-cards-for-coin-master-christmas_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-robux-on-roblox-hack-no-offer_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/rbx-place-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-things-on-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-hack-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-minecraft-account-and-password-generator_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/mcpe-free-download_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/hack-tools-for-roblox-apocalypse-rising_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-need-for-speed-cash-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-vip-hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-redeem-code-free_GM479516143.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_off0000303f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x303F 22116 bytes
SHA-256: d23cf9862624065116f706a2db822a831929bd7520c9c0e35f57fdac8c294b3a
font_01_sfnt_off00006176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6176 19020 bytes
SHA-256: 279edcc7e2ac619fac99cae6e755b498cd863b05a8f8d7325c720574f4b4d83e

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