Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c20161f64427442…

MALICIOUS

PDF

40.3 KB Created: 2021-04-24 23:08:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 3686fa1475d862fe1f44af4e0f62188f SHA-1: 59cddc18a374bc9c5fa0c37a60dbc6df558a218f SHA-256: 6c20161f644274421fca22603ce5e05a75494803a8315d81965cf7bfb6339823
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and lures users with promises of free game items and hacks. The primary link directs to 'free-roblox-accounts-2021-not-banned-game-hack', indicating a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest an attempt to lead the user to a malicious site, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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 https://netcdn.xyz/app/431946152/free-roblox-accounts-2021-not-banned-game-hack In PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/how-to-get-anyone-password-on-roblox-for-free.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/free-robux-promise.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/como-descargar-hack-para-matar-en-roblox.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/free-vetement-roblox.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/free-robux-no-surverys.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/roblox-kill-hack-download.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/deleting-baseplate-roblox-hack.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/show-me-how-to-get-free-robux-on-roblox.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/roblox-studio-free-download-for-ipad.pdfIn PDF document text
    • https://www.wetotravels.com/uploaded_files/userfiles/files/get-anything-free-catalog-roblox-pastebin.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 1

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_003_off00004080.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4080 24776 bytes
SHA-256: fe8431c00b22f5f49c3fe53969d5e35822d50c2f71eeca5ba12bccdffac50ebd
font_01_sfnt_off00007988.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7988 18996 bytes
SHA-256: da5c3c9e3d326a00f2f2b1f533d90b48f11cc3fe3f0dfd7cc284c000e8bc5d30

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