Malicious PDF — malware analysis report

Static analysis result for SHA-256 560513452298d435…

MALICIOUS

PDF

50.2 KB Created: 2021-05-17 07:13:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 256f0c0f52677c24cf3ba83b334589ca SHA-1: 07505a2546051dcc7abcbaed9f280925a7ffd21f SHA-256: 560513452298d4358727e2d90f9f51617e9c04d6a8b22658268e82d0ce48c0b5
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 direct users to malicious content or phishing sites. The document body and heuristics indicate a lure for game hacks or cheats, such as 'Robux Free Com', which is a common tactic for distributing malware or leading users to scam pages. The presence of many SEO-optimized PDF links suggests an attempt to manipulate search results and attract unsuspecting users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9349

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/431946152/robux-free-com-game-hack
    • http://www.kalaaliaraq.dk/images/universal-minecraft-converter-free_GM479516143.pdf
    • http://www.kalaaliaraq.dk/images/coin-master-gold-cards-free_GM406889139.pdf
    • http://www.kalaaliaraq.dk/images/bit-ly-coin-master-hack_GM406889139.pdf
    • http://www.kalaaliaraq.dk/images/coin-master-hack-apk-july-29_GM406889139.pdf
    • http://www.kalaaliaraq.dk/images/free-spins-and-coins-on-coin-master_GM406889139.pdf
    • http://www.kalaaliaraq.dk/images/cm-free-spins_GM406889139.pdf
    • http://www.kalaaliaraq.dk/images/hack-coin-master-ios-download_GM406889139.pdf
    • http://www.kalaaliaraq.dk/images/how-can-i-play-minecraft-for-free_GM479516143.pdf
    • http://www.kalaaliaraq.dk/images/how-can-i-get-free-spins-on-coin-master_GM406889139.pdf
    • http://www.kalaaliaraq.dk/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdf
    • http://www.kalaaliaraq.dk/images/free-coin-master-coins_GM406889139.pdf
    • http://www.kalaaliaraq.dk/images/minecraft-hacks-wurst_GM479516143.pdf
    • http://www.kalaaliaraq.dk/images/get-2021-free-spins-on-coin-master_GM406889139.pdf
    • http://www.kalaaliaraq.dk/images/free-spins-from-coin-master_GM406889139.pdf
    • http://www.kalaaliaraq.dk/images/coin-master-hack-2021-without-verification_GM406889139.pdf
    • http://www.kalaaliaraq.dk/images/free-robux-not-fake_GM431946152.pdf
    • http://www.kalaaliaraq.dk/images/coin-master-admin-free-spins_GM406889139.pdf
    • http://www.kalaaliaraq.dk/images/roblox-games-that-give-you-free-robux_GM431946152.pdf
    • http://www.kalaaliaraq.dk/images/roblox-army-free-robux_GM431946152.pdf
    • http://www.kalaaliaraq.dk/images/hacks-for-coin-master-game_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a07.bin
e5f66a0863937013673603803bc8e49fd67a30eb6ea70afe6b73be320fad085e
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A07 34696 bytes
font_01_sfnt_off0000951f.bin
450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
pdf-font-stream PDF embedded font (sfnt) at offset 0x951F 5696 bytes
font_02_sfnt_off0000a230.bin
0fd65c317a1abc649e3faff400e4768e1aa7d1dd6ac5589c15474ffa47aab2c1
pdf-font-stream PDF embedded font (sfnt) at offset 0xA230 18276 bytes