Malicious PDF — malware analysis report

Static analysis result for SHA-256 45838b0c804df37e…

MALICIOUS

PDF

48.2 KB Created: 2021-06-13 23:00:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 8d95fc02db74fd353ba661ca261abc0a SHA-1: f93f15f1fb747c93dece661f2d551c0e6bd4227b SHA-256: 45838b0c804df37e9b4c20f28ffa9bdb79d933ffd5001e30d36df1fc82b58966
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a link farm, strongly suggesting it is designed to redirect users to malicious websites. The document body and extracted URLs explicitly mention 'Free Robux Hack' and similar game cheats, indicating a social engineering lure to encourage downloads. The presence of external links and the ML classifier's high confidence score support the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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 http://netcdn.co/app/431946152/free-robux-hack-no-human-verification-2021-game-hack PDF link annotation
    • https://altaviastagerace.it/wp-content/uploads/fsqm-files/roblox-freak-bloxers-hacks_GM431946152.pdfIn PDF document text
    • https://altaviastagerace.it/wp-content/uploads/fsqm-files/roblox-free-medieval-hood_GM431946152.pdfIn PDF document text
    • https://altaviastagerace.it/wp-content/uploads/fsqm-files/free-robux-no-virus-hax-free_GM431946152.pdfIn PDF document text
    • https://altaviastagerace.it/wp-content/uploads/fsqm-files/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • https://altaviastagerace.it/wp-content/uploads/fsqm-files/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • https://altaviastagerace.it/wp-content/uploads/fsqm-files/free-robux-on-ipad-pro_GM431946152.pdfIn PDF document text
    • https://altaviastagerace.it/wp-content/uploads/fsqm-files/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • https://altaviastagerace.it/wp-content/uploads/fsqm-files/free-generator-for-card-roblox-robux_GM431946152.pdfIn PDF document text
    • https://altaviastagerace.it/wp-content/uploads/fsqm-files/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • https://altaviastagerace.it/wp-content/uploads/fsqm-files/give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://altaviastagerace.it/wp-content/uploads/fsqm-files/how-do-i-hack-roblox-games_GM431946152.pdfIn PDF document text
    • https://altaviastagerace.it/wp-content/uploads/fsqm-files/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • https://altaviastagerace.it/wp-content/uploads/fsqm-files/free-mobile-360-free-robux_GM431946152.pdfIn PDF document text
    • https://altaviastagerace.it/wp-content/uploads/fsqm-files/how-to-cheat-to-get-robux_GM431946152.pdfIn PDF document text
    • https://altaviastagerace.it/wp-content/uploads/fsqm-files/roblox-team-fortress-2-free-to-play_GM431946152.pdfIn PDF document text
    • https://altaviastagerace.it/wp-content/uploads/fsqm-files/cheat-files-robux-generator_GM431946152.pdfIn PDF document text
    • https://altaviastagerace.it/wp-content/uploads/fsqm-files/roblox-games-for-free-online-no-download_GM431946152.pdfIn PDF document text
    • https://altaviastagerace.it/wp-content/uploads/fsqm-files/how-to-get-free-penguin-costume-on-roblox_GM431946152.pdfIn PDF document text
    • https://altaviastagerace.it/wp-content/uploads/fsqm-files/free-roblox-generator-activation-key_GM431946152.pdfIn PDF document text
    • https://altaviastagerace.it/wp-content/uploads/fsqm-files/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004bce.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BCE 28300 bytes
SHA-256: 327791a35dbc9e8ce89532824a1ce8dfc4f4232cc5d55f6ede0fbc20cd2a42bb
font_01_sfnt_off000089ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89EA 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off00009691.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9691 19432 bytes
SHA-256: 1db0ca193312892c5ddff7a605b31da76f98d469b2a490995e6a3c6d3a28984c

Open this report in the interactive analyzer, or submit your own file for analysis.