Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e722ab2b954d280…

MALICIOUS

PDF

42.2 KB Created: 2021-05-19 14:16:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 7e8ae008097463ca8da5bb164045b431 SHA-1: aa42b12bfc8c64b18ae99fe825bc9c198f672100 SHA-256: 5e722ab2b954d2803c93fbd77396132121dbf00468047b4c491ba4c998cff8d6
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links to external websites, many of which are disguised as PDF files related to game hacks and generators. The primary lure appears to be 'free Robux' or similar in-game currency, a common tactic for phishing and malware distribution. The document body and embedded links suggest an attempt to redirect users to potentially malicious sites that may host further payloads or scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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 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 https://netcdn.xyz/app/431946152/free-robux-without-downloading-apps-game-hack PDF link annotation
    • http://londiniumcentre.com/images/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • http://londiniumcentre.com/images/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://londiniumcentre.com/images/roblox-piano-hack_GM431946152.pdfIn PDF document text
    • http://londiniumcentre.com/images/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • http://londiniumcentre.com/images/coin-master-game-android-free-download_GM406889139.pdfIn PDF document text
    • http://londiniumcentre.com/images/download-hacked-games-coin-master_GM406889139.pdfIn PDF document text
    • http://londiniumcentre.com/images/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://londiniumcentre.com/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://londiniumcentre.com/images/how-to-get-free-spins-on-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://londiniumcentre.com/images/wurst-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • http://londiniumcentre.com/images/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://londiniumcentre.com/images/coin-master-free-coins-cheat_GM406889139.pdfIn PDF document text
    • http://londiniumcentre.com/images/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://londiniumcentre.com/images/coin-master-free-attack_GM406889139.pdfIn PDF document text
    • http://londiniumcentre.com/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://londiniumcentre.com/images/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • http://londiniumcentre.com/images/coin-master-hack-version-download-ios_GM406889139.pdfIn PDF document text
    • http://londiniumcentre.com/images/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://londiniumcentre.com/images/win-free-robux_GM431946152.pdfIn PDF document text
    • http://londiniumcentre.com/images/free-robux-without-human-verification-2021_GM431946152.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_off000047cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47CF 23732 bytes
SHA-256: 66860af1374218a3127d123b853e3a5b82c87c1bd60a6ca28d891a3bc8025159
font_01_sfnt_off00007dda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DDA 19876 bytes
SHA-256: 7dd9be13e4665f5a35086e4b23dd28e6d3ecc39135d95cb28b9ae9c86552181a

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