Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbd5527758ecca4b…

MALICIOUS

PDF

41.9 KB Created: 2021-05-13 15:30:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: fc0910524fc133751dcdc8eba1f924f2 SHA-1: 6bd64e40e157a0233d3609f2133e93ecf84e1774 SHA-256: fbd5527758ecca4b87d86d2b10b78cab4883949aa20b9c0e2a99e5d5a79f036a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that are flagged as malicious redirectors, leading to websites that promise game hacks or generators. The document body and heuristics indicate a lure for users interested in free in-game items, a common tactic for distributing malware or conducting phishing. No scripts were extracted, but the embedded links are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/479516143/free-minecraft-website-game-hack In PDF document text
    • https://www.stadtbesichtigungen.de/images/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/free-robux-meme_GM431946152.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/coin-master-spin-cheat_GM406889139.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/robux-now_GM431946152.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/minecraft-switch-free_GM479516143.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/coin-master-35-13-hack-download_GM406889139.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/free-links-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/coin-master-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/coin-master-hack-2021-app_GM406889139.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/coin-master-hack-mod-game-download_GM406889139.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/free-roblox-scripts_GM431946152.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/earn-robux-today_GM431946152.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/coin-master-free-gift-links-2021_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_off0000493a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x493A 25652 bytes
SHA-256: e8cfca4f24b7965463eb75135b873b6cf0b6ba97c894661fdea379ae38c3c1d5
font_01_sfnt_off0000825d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x825D 17924 bytes
SHA-256: ff8b7dbb958b2e21889f0de65becea477e8c4948e76fdf7eea045243f3f10d1a