Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab042045f9fadc7f…

MALICIOUS

PDF

35.9 KB Created: 2021-06-29 06:45:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 36d03f6bf23c7bd00598d8a87fd854f3 SHA-1: 1102e2d4396b286f3b85e705486c03359e7380d8 SHA-256: ab042045f9fadc7f5cee9bb7c4baf1804728449a4871acf9ca3f7725172db18e
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, identified as a link farm, that direct users to websites offering game hacks and cheats. The ML classifier strongly indicated maliciousness, and the presence of external URIs suggests an attempt to redirect users to malicious or deceptive content. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or social engineering attempt to trick users into downloading further malware or visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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-roblox-d-day-models-game-hack PDF link annotation
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/can-you-really-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/games-that-give-you-free-stuff-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/roblox-vip-door-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/how-to-earn-robux-fast_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/infinite-jump-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/roblox-cheat-engine-64-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/what-is-exploiting-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/free-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/how-to-get-hair-free-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/free-pet-food-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/is-minecraft-free-on-switch_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/free-minecraft-windows-10-with-java_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stikom-ima.ac.id/slims2/repository/roblox-work-at-a-pizza-place-money-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003283.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3283 23016 bytes
SHA-256: 9a7aaf7edce92f473a3c84ba5bd6f47e364a8d474b79ee821f04089a551ddaa8
font_01_sfnt_off00006642.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6642 19400 bytes
SHA-256: b4a479fcf788f9f1d8526dd3f6b88f73d2779aa492d1637faf4f2c3a8e340723

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