Malicious PDF — malware analysis report

Static analysis result for SHA-256 62eebca392213745…

MALICIOUS

PDF

35.0 KB Created: 2021-06-29 03:39:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 0ee228cfe4ae59fa7eeef4c98b3d048c SHA-1: 08ac4d4d1c5cbc0bf04feba7f53cbe8541dcdf00 SHA-256: 62eebca3922137459062b74a88585e1818ddb2b95e981954954751d286479297
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are hosted on known malicious redirector infrastructure. The document body and heuristics indicate a lure for game hacks and free in-game items, suggesting a phishing or scamming attempt. The presence of embedded URLs and the nature of the lures point towards a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • 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
  • 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.co/app/431946152/roblox-view-code-with-cheat-engine-game-hack In PDF document text
    • http://ghi.dk/billeder/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://ghi.dk/billeder/coin-master-hack-app-ios_GM406889139.pdfIn PDF document text
    • http://ghi.dk/billeder/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
    • http://ghi.dk/billeder/meep-city-roblox-how-to-get-free-plus_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • http://ghi.dk/billeder/cheat-roblox-no-exploit_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/how-to-spawn-hack-in-apocolips-rising-roblox-2021_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/free-robux-every-5-seconds_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://ghi.dk/billeder/coin-master-hack-tool-download_GM406889139.pdfIn PDF document text
    • http://ghi.dk/billeder/free-robux-robux-game_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://ghi.dk/billeder/apps-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://ghi.dk/billeder/free-minecraft-premium-account_GM479516143.pdfIn PDF document text
    • http://ghi.dk/billeder/how-do-you-get-roebucks-for-free_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://ghi.dk/billeder/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off000030e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30E9 22196 bytes
SHA-256: fb15836201bd53a1e63ceb7a2a91f5aec42c368c16fe89c29c081d01777fe877
font_01_sfnt_off00006210.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6210 19548 bytes
SHA-256: 0a64443c20bb2cc09adc4cf2e4cbb6ba0cb7d049c11cdcf9e4882a921ac822c3

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