Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd08c448fbf2bef0…

MALICIOUS

PDF

34.8 KB Created: 2021-07-02 07:34:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: e8deea71e5378f0c0960372cc3a099d1 SHA-1: ab5614ec6f0ac0049b9795c408f7e89513d7d5af SHA-256: fd08c448fbf2bef077749e941525ed56f74ed2b0ac3629e860a2a02cd45e20ac
222 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File T1059.003 Windows Command Shell

This PDF document employs social engineering tactics, specifically a 'ClickFix' lure, to trick users into executing commands. The document body and heuristics indicate it promises game hacks and free in-game currency, directing users to copy and paste commands into their terminal. This is a common method to bypass macro restrictions and execute malicious payloads, likely leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 7

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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 http://netcdn.co/app/431946152/how-to-speed-hack-roblox-with-cheat-engine-game-hack PDF link annotation
    • http://library.sdkmaterdei.sch.id/repository/how-to-get-2-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-free-robux-for-android_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/hackear-cuentas-de-roblox-gratuitas_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-items-roblox-20217_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/gamepass-me-free-robux_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/como-tener-hacks-en-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/how-to-change-your-roblox-username-for-free-on-ipad_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/best-free-streaming-device-for-roblox-and-low-end-pcs_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-robux-claim_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/best-way-to-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/roblox-azure-mines-hack_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/how-to-get-good-clothing-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/fly-hack-exploit-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/free-package-codes-roblox-2021-november-17_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/caught-my-mom-cheating-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/hack-robux-gratuit_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/trial-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://library.sdkmaterdei.sch.id/repository/how-to-get-free-robux-easy-on-iphone_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_off00002ef2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EF2 22536 bytes
SHA-256: b1d45cddb7bda895427f8e5c4e49cbbc80af356a91b42b1ea946a0b55653829a
font_01_sfnt_off000060ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60AB 19756 bytes
SHA-256: 32753e1bbce3c3e18c18c5a3d9fb9edca56aa4596dce8dc3ab0f524cc5693c21

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