Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc146d4c1f57a766…

MALICIOUS

PDF

44.5 KB Created: 2021-05-14 13:15:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ac2103a22c2773803a74e0cd9b737d77 SHA-1: d09ce5e961075859e429412379446eb3d885cead SHA-256: cc146d4c1f57a766eef441a863edb8c25e5f4ee85a48669a2adbaba7867a355d
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a document body that explicitly offers 'Free Redeem Code For Coin Master' and links to game hack downloads. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm designed to attract users searching for game cheats or exploits. The ML classifier also strongly flagged this PDF as malicious. While no scripts were directly extracted, the presence of embedded URLs and the lure content strongly suggest a phishing or malware distribution attempt.

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 https://netcdn.xyz/app/406889139/free-redeem-code-for-coin-master-game-hack
    • https://www.elearning-ganjil.massimbangkulon.sch.id/__statics/gudangsoal/files/roblox-hack-download-pc_GM431946152.pdf
    • https://www.elearning-ganjil.massimbangkulon.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-pe-for-free-ios_GM479516143.pdf
    • https://www.elearning-ganjil.massimbangkulon.sch.id/__statics/gudangsoal/files/coin-master-free-spins-apk_GM406889139.pdf
    • https://www.elearning-ganjil.massimbangkulon.sch.id/__statics/gudangsoal/files/today-coin-master-free-coins-link_GM406889139.pdf
    • https://www.elearning-ganjil.massimbangkulon.sch.id/__statics/gudangsoal/files/instant-free-spins-coin-master_GM406889139.pdf
    • https://www.elearning-ganjil.massimbangkulon.sch.id/__statics/gudangsoal/files/coin-master-spin-and-coins-free_GM406889139.pdf
    • https://www.elearning-ganjil.massimbangkulon.sch.id/__statics/gudangsoal/files/coin-master-play-online-free_GM406889139.pdf
    • https://www.elearning-ganjil.massimbangkulon.sch.id/__statics/gudangsoal/files/coin-master-pet-food-free_GM406889139.pdf
    • https://www.elearning-ganjil.massimbangkulon.sch.id/__statics/gudangsoal/files/free-spin-today-coin-master_GM406889139.pdf
    • https://www.elearning-ganjil.massimbangkulon.sch.id/__statics/gudangsoal/files/www-free-robux_GM431946152.pdf
    • https://www.elearning-ganjil.massimbangkulon.sch.id/__statics/gudangsoal/files/minecraft-pocket-edition-mods-for-free_GM479516143.pdf
    • https://www.elearning-ganjil.massimbangkulon.sch.id/__statics/gudangsoal/files/minecraft-beta-free_GM479516143.pdf
    • https://www.elearning-ganjil.massimbangkulon.sch.id/__statics/gudangsoal/files/ways-to-get-free-robux_GM431946152.pdf
    • https://www.elearning-ganjil.massimbangkulon.sch.id/__statics/gudangsoal/files/boku-no-roblox-hack_GM431946152.pdf
    • https://www.elearning-ganjil.massimbangkulon.sch.id/__statics/gudangsoal/files/coin-master-ultra-attack-hack_GM406889139.pdf
    • https://www.elearning-ganjil.massimbangkulon.sch.id/__statics/gudangsoal/files/coin-master-reward-link_GM406889139.pdf
    • https://www.elearning-ganjil.massimbangkulon.sch.id/__statics/gudangsoal/files/roblox-gift-card-for-free_GM431946152.pdf
    • https://www.elearning-ganjil.massimbangkulon.sch.id/__statics/gudangsoal/files/how-to-make-a-free-server-in-minecraft-java_GM479516143.pdf
    • https://www.elearning-ganjil.massimbangkulon.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-pe-for-free_GM479516143.pdf
    • https://www.elearning-ganjil.massimbangkulon.sch.id/__statics/gudangsoal/files/how-to-get-stuff-that-cost-coins-free-mcpe-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ebb.bin
ba285540c1c054af57d1657ba5f7c3d777a56d623d9dae5762e24b428b910473		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4EBB 27556 bytes
font_01_sfnt_off00008c39.bin
8e08ca8cea331ef635d4f0d43e9b7f0e55ee5a5b0bb4b3b8f10d73ecaad2eef0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C39 18144 bytes

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