Malicious PDF — malware analysis report

Static analysis result for SHA-256 b60c6fd85c024d1b…

MALICIOUS

PDF

45.0 KB Created: 2021-05-14 16:33:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 549253a5ed0eac10aff534feefe4c620 SHA-1: cc8568aadc32e0294f11fdb860b3c6c66255f756 SHA-256: b60c6fd85c024d1bf847b8fb42422814fc222ac849923c69ea502873abf70495
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple links that redirect to known malicious infrastructure, specifically promoting 'free Robux' and game hacks. The document body and embedded links strongly suggest a phishing or scam attempt designed to lure users to malicious websites. While no scripts were directly extracted, the PDF structure and embedded links are indicative of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/431946152/free-robux-codes-2021-game-hack In PDF document text
    • http://dopheide.be/images/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • http://dopheide.be/images/how-to-get-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://dopheide.be/images/free-vpn-for-minecraft_GM479516143.pdfIn PDF document text
    • http://dopheide.be/images/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://dopheide.be/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://dopheide.be/images/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://dopheide.be/images/coin-master-free-rewards-link_GM406889139.pdfIn PDF document text
    • http://dopheide.be/images/free-roblox-clothes-for-your-avatar_GM431946152.pdfIn PDF document text
    • http://dopheide.be/images/coin-master-hack-ios-app_GM406889139.pdfIn PDF document text
    • http://dopheide.be/images/coin-master-rewards_GM406889139.pdfIn PDF document text
    • http://dopheide.be/images/coin-master-free-cards-and-spin-link_GM406889139.pdfIn PDF document text
    • http://dopheide.be/images/cheats-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://dopheide.be/images/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • http://dopheide.be/images/how-to-get-free-tokens-in-minecraft-ps4_GM479516143.pdfIn PDF document text
    • http://dopheide.be/images/free-roblox-printables_GM431946152.pdfIn PDF document text
    • http://dopheide.be/images/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://dopheide.be/images/how-to-get-free-pet-snacks-in-coin-master_GM406889139.pdfIn PDF document text
    • http://dopheide.be/images/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • http://dopheide.be/images/where-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://dopheide.be/images/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000047ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47EF 24320 bytes
SHA-256: 791759ee05eafd34a75d577b19c7a062832b1032d8608a689735f0b4d1079889
font_01_sfnt_off00007f75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F75 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00008c1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C1D 18588 bytes
SHA-256: 0c0011b59677f21f59199ad7d2a82948105ed154610022cedcbab6f052c91d55