Malicious PDF — malware analysis report

Static analysis result for SHA-256 472d794c990a0323…

MALICIOUS

PDF

36.1 KB Created: 2021-07-09 05:48:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 22bc1b0320e514fb75ceb44011245fff SHA-1: 78141888a797e1f0dbcad68d514491a7327a14a7 SHA-256: 472d794c990a0323f33a6b9e0df49fa71c25d5e0c4dc642674b332a05fed778e
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document contains a large number of external links, many of which are algorithmically generated and point to game hack lures. The document body explicitly mentions downloading hacks for games like Coin Master and Roblox. The presence of numerous links and the lure of free game hacks strongly suggest a phishing or malware distribution attempt, likely using a link farm to obscure the final malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 6

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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.tw/app/406889139/descargar-hack-coin-master-game-hack PDF link annotation
    • https://elearning.misalifadah.com/__statics/gudangsoal/files/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
    • https://elearning.misalifadah.com/__statics/gudangsoal/files/how-to-hack-admin-commands-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.misalifadah.com/__statics/gudangsoal/files/roblox-robux-hack-tutorial_GM431946152.pdfIn PDF document text
    • https://elearning.misalifadah.com/__statics/gudangsoal/files/pasos-para-hackear-coins-master_GM406889139.pdfIn PDF document text
    • https://elearning.misalifadah.com/__statics/gudangsoal/files/coin-master-free-spin-whatsapp-group-link_GM406889139.pdfIn PDF document text
    • https://elearning.misalifadah.com/__statics/gudangsoal/files/boku-no-roblox-remastered-gui-hack_GM431946152.pdfIn PDF document text
    • https://elearning.misalifadah.com/__statics/gudangsoal/files/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.misalifadah.com/__statics/gudangsoal/files/free-robux-2021-no-offiers_GM431946152.pdfIn PDF document text
    • https://elearning.misalifadah.com/__statics/gudangsoal/files/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.misalifadah.com/__statics/gudangsoal/files/how-to-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.misalifadah.com/__statics/gudangsoal/files/how-to-download-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • https://elearning.misalifadah.com/__statics/gudangsoal/files/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • https://elearning.misalifadah.com/__statics/gudangsoal/files/wwwhaktutsin-2021-08-coinmasterfreespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • https://elearning.misalifadah.com/__statics/gudangsoal/files/tuto-comment-cheat-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.misalifadah.com/__statics/gudangsoal/files/chisel-and-bits-mod-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://elearning.misalifadah.com/__statics/gudangsoal/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://elearning.misalifadah.com/__statics/gudangsoal/files/free-spins-coin-master-generator_GM406889139.pdfIn PDF document text
    • https://elearning.misalifadah.com/__statics/gudangsoal/files/coin-master-free-spins-android_GM406889139.pdfIn PDF document text
    • https://elearning.misalifadah.com/__statics/gudangsoal/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.misalifadah.com/__statics/gudangsoal/files/free-spins-coin-master-links-blogspot_GM406889139.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_off000036a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36A7 23160 bytes
SHA-256: eb80b82403ca8907e903dc2f87c58d78f873a8266c6a5cc46b7497f61e30902c
font_01_sfnt_off00006ac1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC1 18172 bytes
SHA-256: 11cd317cc6618c87b629164bbdf697a1e1b53e16405413ab0fb2cb112edb56c7