Malicious PDF — malware analysis report

Static analysis result for SHA-256 49b8407cb43625e6…

MALICIOUS

PDF

46.8 KB Created: 2021-06-10 14:08:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 825e75bd5b3f9182139b8213f0609f33 SHA-1: 41012ef300e26daacda70a142b862130d0f168ab SHA-256: 49b8407cb43625e68d3d3b6359476bfdad620c012f051286084885f00004730b
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which are SEO-optimized and point to websites offering game-related cheats and hacks. The document body and extracted URLs suggest a lure for users seeking free Robux or similar in-game currency, which is a common tactic for phishing or malware distribution. The presence of numerous PDF links and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

Heuristics 4

  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.tw/app/431946152/how-to-get-free-robux-form-inspect-game-hack PDF link annotation
    • https://my-private-intendant.com/images/roblox-free-robux-limited-time_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/script-executor-roblox-free_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/roblox-hacking-software-free-download_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/free-disney-plus-accounts-tiktok_GM835599320.pdfIn PDF document text
    • https://my-private-intendant.com/images/coin-master-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/minecraft-free-apk-java-edition_GM479516143.pdfIn PDF document text
    • https://my-private-intendant.com/images/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • https://my-private-intendant.com/images/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/how-to-make-a-roblox-group-for-free_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/legit-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/roblox-robux-hack-cheat-engine-64-2021_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/minecraft-free-minecraft_GM479516143.pdfIn PDF document text
    • https://my-private-intendant.com/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/free-minecraft-capes_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050f8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50F8 25024 bytes
SHA-256: ee2dc34a0b8d1cc5b9bf2661b5e956746aac166aae9afb8810f9b1a90325fa40
font_01_sfnt_off0000890e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x890E 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off000092bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92BC 18716 bytes
SHA-256: f0b7c78b3a963ec53259ee4a1886df40375d6aa07838a14c7b276a471e28d5ca

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