Malicious PDF — malware analysis report

Static analysis result for SHA-256 26bdd1869367fb6b…

MALICIOUS

PDF

42.5 KB Created: 2021-05-13 21:02:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d8edceca8a7152b8978dc41025ef2c4b SHA-1: 954ca27149f4fc7d700c54d1c6793669398dd7b7 SHA-256: 26bdd1869367fb6b4c88f9cae97b6f37cee7798d1125a6f91c5ff70caa40bf84
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links to external websites, many of which are structured as SEO-optimized links related to game cheats and hacks. The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests a malicious intent to drive traffic or distribute further malware. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/479516143/how-to-hack-minecraft-game-hack
    • http://jaeger-bauplanung.de/images/can-i-play-roblox-for-free_GM431946152.pdf
    • http://jaeger-bauplanung.de/images/robux-no-human-verification_GM431946152.pdf
    • http://jaeger-bauplanung.de/images/coin-master-rare-cards-hack_GM406889139.pdf
    • http://jaeger-bauplanung.de/images/robuxy-com-free-robux_GM431946152.pdf
    • http://jaeger-bauplanung.de/images/is-there-a-free-version-of-minecraft_GM479516143.pdf
    • http://jaeger-bauplanung.de/images/coin-master-hacks-for-android_GM406889139.pdf
    • http://jaeger-bauplanung.de/images/free-roblox-clothes-and-hair_GM431946152.pdf
    • http://jaeger-bauplanung.de/images/roblox-bux-free_GM431946152.pdf
    • http://jaeger-bauplanung.de/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdf
    • http://jaeger-bauplanung.de/images/free-spins-on-coin-master-cheat_GM406889139.pdf
    • http://jaeger-bauplanung.de/images/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdf
    • http://jaeger-bauplanung.de/images/hack-coin-master-without-human-verification_GM406889139.pdf
    • http://jaeger-bauplanung.de/images/free-robux-come_GM431946152.pdf
    • http://jaeger-bauplanung.de/images/coin-master-how-to-get-free-pet-food_GM406889139.pdf
    • http://jaeger-bauplanung.de/images/how-to-get-free-robux-no-verification-2021_GM431946152.pdf
    • http://jaeger-bauplanung.de/images/coins-master_GM406889139.pdf
    • http://jaeger-bauplanung.de/images/free-coin-spin_GM406889139.pdf
    • http://jaeger-bauplanung.de/images/free-minecraft-codes-2021_GM479516143.pdf
    • http://jaeger-bauplanung.de/images/www-roblox-com-free-robux_GM431946152.pdf
    • http://jaeger-bauplanung.de/images/how-to-get-minecraft-for-free-on-tablet_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a4a.bin
604fbd7960dc2a8c1a5141c1cc8d9b4e9e9cfe6b2080fcc99ec4bc8cdbca013a
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A4A 25668 bytes
font_01_sfnt_off00008471.bin
ee12250b32ae9257b8264adf9c9bd9c6b89cbb94dc70a51b2b21ac09721525f2
pdf-font-stream PDF embedded font (sfnt) at offset 0x8471 18044 bytes