Malicious PDF — malware analysis report

Static analysis result for SHA-256 a066f0413933bf0a…

MALICIOUS

PDF

34.6 KB Created: 2021-07-04 07:34:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 2fd7eaa7daf76081009a0e87d5510bdc SHA-1: 6f6d035c3e8bb91fb3aa6b07cffa5a4117ac4808 SHA-256: a066f0413933bf0acfaa5bef209f872a5307cbd1777400aeb3a9c197adb89346
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs designed to lure users into clicking on links related to game hacks and free currency, such as Robux. These links redirect to known malicious infrastructure, indicating a phishing or scam attempt. The presence of 'cmd-prompt' in one of the URLs suggests a potential attempt to trick users into running commands.

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.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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/robux-offer-wall-game-hack In PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-do-i-get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-get-a-tiger-free-shard-seekers-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-hack-app-ios_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-hack-roblox-with-cmd-prompt_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-roblox-gift-card-codes-2021-june_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/cute-roblox-girl-outfits-free_GM431946152.pdfIn macro / runtime command snippet
    • http://stikespantirapih.ac.id/home/repository/roblox-speed-hack-2021-cheat-engine_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-free-robux-for-wiewers_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-link-daily-get-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-generator-to-getv-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-free-game-free-to-play_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/com-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-get-free-robux-on-roblox-ipad-mini_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/comment-jouer-a-roblox-avec-une-manette-free_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/is-there-a-free-way-to-get-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-crack-free-robux-robuxmaniac_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-earn_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/youtube-roblox-hack-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/i-succ-for-free-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/homIn macro / runtime command snippet
    • 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_off0000319c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x319C 22204 bytes
SHA-256: 902973cb05f1e8dfa25778d2ec42783839108c5ef8601d1f96ac5744c8fd3d91
font_01_sfnt_off000062e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E4 18824 bytes
SHA-256: e8c28850c010c1215c7b926fc0b71a2cd0ef8286ab5f41690e7fda9418183c37

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