Malicious PDF — malware analysis report

Static analysis result for SHA-256 0108979bdab0b800…

MALICIOUS

PDF

44.6 KB Created: 2021-05-13 09:06:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 7320915af6904dd28855e56d7d8179cb SHA-1: a710c4f21600d5468730899fb703324983180e06 SHA-256: 0108979bdab0b8006a867912eb775bf9804643cc34d993aae94c3c43ca88e0e3
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs that form a link farm, likely intended to redirect users to malicious content or phishing sites. The document body and extracted URLs suggest a lure related to game cheats and free packs, a common tactic for social engineering. While no scripts were explicitly extracted, the PDF structure and the presence of external links indicate a potential for downloading further payloads or redirecting to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/406889139/free-game-pack-coin-master-game-hack
    • http://unc-europe.com/images/free-spins-coin-master-cheat_GM406889139.pdf
    • http://unc-europe.com/images/coin-master-how-to-get-japan-sushi-card-free_GM406889139.pdf
    • http://unc-europe.com/images/coin-master-attack-hack-apk_GM406889139.pdf
    • http://unc-europe.com/images/daily-coin-master-free-spin-apk_GM406889139.pdf
    • http://unc-europe.com/images/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdf
    • http://unc-europe.com/images/how-to-earn-robux-by-playing-games_GM431946152.pdf
    • http://unc-europe.com/images/robux-gift-card-free_GM431946152.pdf
    • http://unc-europe.com/images/today-coin-master-free-coins-link_GM406889139.pdf
    • http://unc-europe.com/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdf
    • http://unc-europe.com/images/coin-master-rare-cards-hack_GM406889139.pdf
    • http://unc-europe.com/images/www-coinmaster_GM406889139.pdf
    • http://unc-europe.com/images/coin-master-free-spins-ios-2021_GM406889139.pdf
    • http://unc-europe.com/images/where-to-get-free-robux_GM431946152.pdf
    • http://unc-europe.com/images/earn-free-robux-today_GM431946152.pdf
    • http://unc-europe.com/images/free-robux-pin-codes_GM431946152.pdf
    • http://unc-europe.com/images/free-coin-master-spins-blogger_GM406889139.pdf
    • http://unc-europe.com/images/how-to-hack-any-roblox-account_GM431946152.pdf
    • http://unc-europe.com/images/how-do-you-hack-minecraft_GM479516143.pdf
    • http://unc-europe.com/images/free-minecraft-maps_GM479516143.pdf
    • http://unc-europe.com/images/coinmaster-com_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048c6.bin
6d3558f3a7f9cd6c10a4b7c2dd1053af510ce048a0b6af0394c58666ab30f61d
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48C6 24756 bytes
font_01_sfnt_off00007fed.bin
1dd933c112880b232546f3aab6a17784a8f412d39fd551cc6eb31c5a04c3ce57
pdf-font-stream PDF embedded font (sfnt) at offset 0x7FED 3380 bytes
font_02_sfnt_off00008bd6.bin
50801c1212ba10e6fec772be1621f3a9c69628be9ab96fac5d906e32cadaa888
pdf-font-stream PDF embedded font (sfnt) at offset 0x8BD6 18292 bytes