Malicious PDF — malware analysis report

Static analysis result for SHA-256 80b6b7952ac11ef5…

MALICIOUS

PDF

34.3 KB Created: 2021-07-03 17:19:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 98bfc73cdce39b0c500a8340d1e87ec1 SHA-1: e7771fbc6a1cd56296cc3667ca6812856ec1db8c SHA-256: 80b6b7952ac11ef5a40ecc907ad2c90ed62f252858381e51b47c29397c02b7b0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and other PDFs, masquerading as generators for game hacks and cheats. The primary lure appears to be related to 'Robux Free Promo Codes' and 'game hacks'. The document body and heuristics indicate a clear intent to redirect users 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.tw/app/431946152/robux-free-promo-codes-game-hack In PDF document text
    • http://fobh.net/userfiles/files/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://fobh.net/userfiles/files/get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://fobh.net/userfiles/files/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • http://fobh.net/userfiles/files/when-was-minecraft-free_GM479516143.pdfIn PDF document text
    • http://fobh.net/userfiles/files/coin-master-free-coins-and-spins-hack_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/earn-rbx_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://fobh.net/userfiles/files/free-robux-app_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/free-minecraft-account-generator_GM479516143.pdfIn PDF document text
    • http://fobh.net/userfiles/files/free-spin-coin-master-today_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/how-to-cheat-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/how-to-get-free-clothes-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/is-minecraft-earth-free_GM479516143.pdfIn PDF document text
    • http://fobh.net/userfiles/files/legit-robux-cheat-hack_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/coin-master-tricks_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/coin-master-free-spin-best-link_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/eclipse-roblox-hack_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_off00002dfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DFE 22412 bytes
SHA-256: 29c38fa16a4f2300c970541217baaa224fd684fde8a5430093ff9c36e1a56f07
font_01_sfnt_off00006042.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6042 19304 bytes
SHA-256: c1af96096ee4fe66b31908d73526086302c421ddc21d11abc86e2e14451b0c0a

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