Malicious PDF — malware analysis report

Static analysis result for SHA-256 f061bfee0d3f0bca…

MALICIOUS

PDF

34.9 KB Created: 2021-06-25 07:11:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 15711059dd63b1abbc6a27ab924b3460 SHA-1: c47bb4fcfe851e52a707edb94c35764f1650334f SHA-256: f061bfee0d3f0bca557946d576a980bd481341104fc44f2f47770720e9065325
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file employs a common lure related to free game currency ('Robux') and game hacks to entice users into clicking a link. The primary link, http://netcdn.co/app/431946152/games-in-roblox-that-give-you-free-robux-game-hack, is flagged as a malicious redirector, indicating a probable phishing or malware distribution attempt. The document's structure and embedded URLs suggest an initial access vector via spearphishing attachment, leading to a redirection chain.

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/games-in-roblox-that-give-you-free-robux-game-hack In PDF document text
    • http://repository.unla.ac.id/repository/app-store-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-robux-codes-wiki-fandom_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-spin-card-exchange-coin-master_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/daily-free-spins_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-hack-unlimited-spins-game-download_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/hack-roblox-players_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/body-roblox_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-robux-best-hack_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/military-outfit-roblox-free-download_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/coin-master-daily-free-spin-and-coin-link-haktuts_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-to-play-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/spin-link_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/guide--coin-master-free-tips_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/roblox-free-gears-hat-faces-clothes-2_GM431946152.pdfIn PDF document text
    • http://repository.unla.ac.id/repository/links-to-get-free-coins-in-coin-master_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30D8 21984 bytes
SHA-256: 90bd7437c3fbffd9035ddcc64a65726f84c263e3eb7852ed8d6be7c1cd07bf73
font_01_sfnt_off0000615c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x615C 19716 bytes
SHA-256: eab8d737a1b1a56d366011034787d896893825dfeb8e4579780a9a1cb84f0c2a

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