Malicious PDF — malware analysis report

Static analysis result for SHA-256 910e97ceac35f7ad…

MALICIOUS

PDF

44.2 KB Created: 2021-05-14 08:53:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: feea51bf918d7ce7d3b368b9aec9f69f SHA-1: e5810d230eef8d9e43edc61e30a98d7e7e446ef3 SHA-256: 910e97ceac35f7adde9026140695ac33434175010d1794418170e7cde49db125
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous external links, many of which point to other PDF files hosted on similar domains, suggesting a link farm designed to lure users into downloading potentially malicious content. The document body, though heavily obfuscated, contains references to game hacks and free items, aligning with a phishing or scam pretext. The presence of external URIs and a link farm heuristic indicates an attempt to redirect users to external resources, likely for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/cm-daily-spins-game-hack
    • https://itv-grabungen.de/images/free-shields-coin-master_GM406889139.pdf
    • https://itv-grabungen.de/images/how-to-hack-roblox-to-get-robux_GM431946152.pdf
    • https://itv-grabungen.de/images/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdf
    • https://itv-grabungen.de/images/free-minecraft-java-edition-account_GM479516143.pdf
    • https://itv-grabungen.de/images/free-robux-2021-no-human-verification_GM431946152.pdf
    • https://itv-grabungen.de/images/can-i-get-minecraft-windows-10-for-free_GM479516143.pdf
    • https://itv-grabungen.de/images/free-spin-link-for-coin-master_GM406889139.pdf
    • https://itv-grabungen.de/images/coin-master-free-spins-link-today-facebook_GM406889139.pdf
    • https://itv-grabungen.de/images/mobihack-roblox-hack_GM431946152.pdf
    • https://itv-grabungen.de/images/coin-master-fb-free-spins-link_GM406889139.pdf
    • https://itv-grabungen.de/images/coin-master-hack-apk-2021-ios_GM406889139.pdf
    • https://itv-grabungen.de/images/coin-master-hack-2021_GM406889139.pdf
    • https://itv-grabungen.de/images/free-spin-coin-master-link-2021_GM406889139.pdf
    • https://itv-grabungen.de/images/twitter-coin-master-free-spins_GM406889139.pdf
    • https://itv-grabungen.de/images/minecraft-gun-games-free_GM479516143.pdf
    • https://itv-grabungen.de/images/coin-master-free-spins-for-today_GM406889139.pdf
    • https://itv-grabungen.de/images/robux-com-free_GM431946152.pdf
    • https://itv-grabungen.de/images/unlimited-free-spins-coin-master_GM406889139.pdf
    • https://itv-grabungen.de/images/how-to-robux_GM431946152.pdf
    • https://itv-grabungen.de/images/free-robux-gen_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000045c2.bin
718c1b56f98652393d4255ff042dc60d15e2aba763955c98f1952fd32f9edd4f
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x45C2 26008 bytes
font_01_sfnt_off0000812b.bin
3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
pdf-font-stream PDF embedded font (sfnt) at offset 0x812B 2840 bytes
font_02_sfnt_off00008adc.bin
3219ea0e52318e94ce20b7b3342b9bbf5f3a389bd6fb88bf591e9537762def99
pdf-font-stream PDF embedded font (sfnt) at offset 0x8ADC 18160 bytes