Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fabfc2156c417e1…

MALICIOUS

PDF

44.2 KB Created: 2021-06-01 13:30:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 84b9023d9c9373db65cc13974fb0755a SHA-1: 819c118c443d72abe73c04f16aaf2d3ed488565a SHA-256: 5fabfc2156c417e1fcad3e35ea72f029e038b5ab2dbc17b1e131f94c4e91539d
142 Risk Score

Malware Insights

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

This PDF document contains numerous links to external websites, many of which are SEO-optimized pages promoting game hacks and free currency generators. The primary lure appears to be 'free Robux' for Roblox, directing users to potentially malicious sites. The PDF structure and embedded links suggest a tactic to drive traffic to scam or phishing pages, possibly as part of a larger campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/how-to-get-free-robux-in-roblox-on-ios-game-hack PDF link annotation
    • https://www.softwaretestingnews.co.uk/wp-content/uploads/fsqm-files/flame-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://www.softwaretestingnews.co.uk/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • https://www.softwaretestingnews.co.uk/wp-content/uploads/fsqm-files/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://www.softwaretestingnews.co.uk/wp-content/uploads/fsqm-files/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://www.softwaretestingnews.co.uk/wp-content/uploads/fsqm-files/free-followers-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.softwaretestingnews.co.uk/wp-content/uploads/fsqm-files/minecraft-pe-free-download_GM479516143.pdfIn PDF document text
    • https://www.softwaretestingnews.co.uk/wp-content/uploads/fsqm-files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • https://www.softwaretestingnews.co.uk/wp-content/uploads/fsqm-files/1-robux-every-second-hack-robuxian_GM431946152.pdfIn PDF document text
    • https://www.softwaretestingnews.co.uk/wp-content/uploads/fsqm-files/if-everything-was-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.softwaretestingnews.co.uk/wp-content/uploads/fsqm-files/dungeon-quest-roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://www.softwaretestingnews.co.uk/wp-content/uploads/fsqm-files/comment-cheat-sur-roblox-avec-cheat-engine_GM431946152.pdfIn PDF document text
    • https://www.softwaretestingnews.co.uk/wp-content/uploads/fsqm-files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://www.softwaretestingnews.co.uk/wp-content/uploads/fsqm-files/how-do-you-get-robux-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.softwaretestingnews.co.uk/wp-content/uploads/fsqm-files/proxo-descargar-roblox-hack-we-are-devs_GM431946152.pdfIn PDF document text
    • https://www.softwaretestingnews.co.uk/wp-content/uploads/fsqm-files/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.softwaretestingnews.co.uk/wp-content/uploads/fsqm-files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.softwaretestingnews.co.uk/wp-content/uploads/fsqm-files/how-to-hack-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://www.softwaretestingnews.co.uk/wp-content/uploads/fsqm-files/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://www.softwaretestingnews.co.uk/wp-content/uploads/fsqm-files/free-robux-no-verification-2021-ios_GM431946152.pdfIn PDF document text
    • https://www.softwaretestingnews.co.uk/wp-content/uploads/fsqm-files/create-minecraft-server-free_GM479516143.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_off000050c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50C0 25092 bytes
SHA-256: 3db62bb0ce9b83efb0e28d84487205e2926f7dae0837f4812b3e334e1e05f74e
font_01_sfnt_off00008a06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A06 18356 bytes
SHA-256: 52d4ccf043f854e5c58f815a33de670ac8266b867de912bb9244992d7c2e14ba

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