Malicious PDF — malware analysis report

Static analysis result for SHA-256 7249e92488f6897b…

MALICIOUS

PDF

34.4 KB Created: 2021-06-20 06:06:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: cb2676c5bfb48829c18d3175e4c3333d SHA-1: 0b2c1443724b6920794f5898233564818ff0cd9d SHA-256: 7249e92488f6897b9c280b8c8695a189850aa0040c22bd4f5e27ed8388b22896
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including one identified as a malicious redirector, that promise free game hacks and currency. The document body and heuristics indicate a lure for game-related exploits. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lures suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/builders-club-roblox-free-download-game-hack In PDF document text
    • http://repository.ummy.ac.id//repository/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-village-4_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/roblox-promo-code-hack-2021_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-free-spins-and-chips_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/como-hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/all-the-codes-not-used-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/can-any-codes-give-u-free-robux-2021-working_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/cheat-roblox-fr_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/1x1x1x1-in-april-fools-roblox-hacking_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/how-to-use-process-hacker-for-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/freespinandcoin_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/hack-coin-master-android-game_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/free-roblox-downloader_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-free-spins-and-coins-daily_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_off00002eb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EB6 22328 bytes
SHA-256: 0612f4c21c72471c2c4fe6b6e470b8bde5496dee3d7949c3bd02792dcb444542
font_01_sfnt_off00006080.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6080 19416 bytes
SHA-256: 6c433bc5a1df66b172a2ea23e396bde7d8335b0518c1ede6d6590f0c90c9e22d

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