Malicious PDF — malware analysis report

Static analysis result for SHA-256 879dfdc3551e4851…

MALICIOUS

PDF

47.1 KB Created: 2021-05-31 20:02:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 53262330564a375249af0ad8fec3963b SHA-1: 6d440e598063bb03ad33f127fb12013f636798e7 SHA-256: 879dfdc3551e4851ba6e2f701462285aace200468c35493748b3af0a7a5ec278
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, including a primary redirector disguised as a game hack generator. This suggests the document's purpose is to lead users to potentially malicious sites, likely for further exploitation or phishing. The presence of a visual download button lure reinforces the deceptive nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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 https://netcdn.xyz/app/431946152/free-long-good-roblox-names-game-hack In PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/roblox-hack-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/free-tiktok-fans_GM835599320.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/join-this-roblox-group-for-free-robux-roblox-groups_GM431946152.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/free-robux-obby_GM431946152.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/roblox-dynamic-ship-simulator-hack_GM431946152.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/free-tiktok-likes-without-verification_GM835599320.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/roblox-com-mobile-hacks-for-free_GM431946152.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://iba.org.fj/wp-content/uploads/fsqm-files/can-i-get-minecraft-for-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
stream_004_off000055fc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x55FC 26732 bytes
SHA-256: 736d464ba61bf34f57a5cc84179e5d4a7c15d8b42c32507dfe6efd041aa306ee
font_01_sfnt_off000093a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93A7 18896 bytes
SHA-256: 6f4c281f91fc35b3631ecc4c9ec7ae2035fd4d1d0ab75febfc978dfd0b125045

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