Malicious PDF — malware analysis report

Static analysis result for SHA-256 fafc155ed9bf12c9…

MALICIOUS

PDF

35.3 KB Created: 2021-07-04 11:34:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 44852cbfdfaf6e978d0edd9dae613c3d SHA-1: 8e07008b922cae299a6d419b986e051052aa3dea SHA-256: fafc155ed9bf12c961d53c3fa724118d2e453ae6375c9822914f1443c178e387
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, masquerading as a "free Robux generator" to lure victims. The document body and embedded URLs strongly suggest a phishing or scam attempt, likely leading to further malware download or credential harvesting. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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.tw/app/431946152/free-robux-generator-no-survey-game-hack In PDF document text
    • https://eastwood.co.ke/uploaded_files/userfiles/files/free-roblox-com-games_GM431946152.pdfIn PDF document text
    • https://eastwood.co.ke/uploaded_files/userfiles/files/wwwrobux-cheat-us-unlimited_GM431946152.pdfIn PDF document text
    • https://eastwood.co.ke/uploaded_files/userfiles/files/how-to-get-verified-on-tiktok-for-free-2021_GM835599320.pdfIn PDF document text
    • https://eastwood.co.ke/uploaded_files/userfiles/files/free-giftcards-de-roblox_GM431946152.pdfIn PDF document text
    • https://eastwood.co.ke/uploaded_files/userfiles/files/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • https://eastwood.co.ke/uploaded_files/userfiles/files/minecraft-free-education_GM479516143.pdfIn PDF document text
    • https://eastwood.co.ke/uploaded_files/userfiles/files/how-are-people-able-to-cheat-in-items-in-roblox_GM431946152.pdfIn PDF document text
    • https://eastwood.co.ke/uploaded_files/userfiles/files/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • https://eastwood.co.ke/uploaded_files/userfiles/files/how-to-get-free-robux-on-roblox-working-2021-fast_GM431946152.pdfIn PDF document text
    • https://eastwood.co.ke/uploaded_files/userfiles/files/coin-master-free-spins-and-chips_GM406889139.pdfIn PDF document text
    • https://eastwood.co.ke/uploaded_files/userfiles/files/roblox-items-for-free_GM431946152.pdfIn PDF document text
    • https://eastwood.co.ke/uploaded_files/userfiles/files/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://eastwood.co.ke/uploaded_files/userfiles/files/is-there-any-actual-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://eastwood.co.ke/uploaded_files/userfiles/files/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • https://eastwood.co.ke/uploaded_files/userfiles/files/how-to-hack-atm-roblox_GM431946152.pdfIn PDF document text
    • https://eastwood.co.ke/uploaded_files/userfiles/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://eastwood.co.ke/uploaded_files/userfiles/files/free-robux-come_GM431946152.pdfIn PDF document text
    • https://eastwood.co.ke/uploaded_files/userfiles/files/free-roblox-codes-2021_GM431946152.pdfIn PDF document text
    • https://eastwood.co.ke/uploaded_files/userfiles/files/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • https://eastwood.co.ke/uploaded_files/userfiles/files/give-me-robux-now_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003220.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3220 22476 bytes
SHA-256: c25441c1daebc78d49a168376e56476dbda89a38d2992a77b78084ec736afb83
font_01_sfnt_off00006492.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6492 19112 bytes
SHA-256: 33dfcb2d47e73eef9736d676cbbc8a7ec86e5e18ee4675d0e02e08c00d2a765b

Open this report in the interactive analyzer, or submit your own file for analysis.