Malicious PDF — malware analysis report

Static analysis result for SHA-256 829d124677650fea…

MALICIOUS

PDF

42.8 KB Created: 2021-04-25 08:04:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: af3a3eeaabf4cd7cd126f74e092be9b1 SHA-1: a880a3120d4f4b3b6ef289df38fdad9ab0d12bb9 SHA-256: 829d124677650feafa720dc13fbc4b08e2c82060eb25f416fbee684df65d8f41
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one to a known malicious redirector infrastructure, disguised as a lure for game hacks. The document body and embedded links suggest a social engineering attempt to trick users into visiting potentially harmful websites. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious redirector chain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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 https://netcdn.xyz/app/431946152/apocalypes-rising-roblox-hacks-game-hack In PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/roblox-free-robux-2021-hack.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/how-to-change-you-name-in-roblox-hack.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/how-to-create-a-shirt-on-roblox-for-free.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/how-to-get-free-robux-onroblox-and-pastebin.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/free-robux-promo-codes-june-2021.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/roblox-the-scary-elevator-red-keys-locations-cheat-sheet.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/roblox-hack-robux-game-you-achley-get-robux.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/robux-hack-no-verification-at-all.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/auto-kill-hack-roblox-assassin.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/free-roblox-gift-card-2021-live.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
stream_003_off000043ca.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x43CA 28600 bytes
SHA-256: 5b32057d5218a083d0a9a543fe073e209d367090cdfd2952ef45988f044b33cb
font_01_sfnt_off00008375.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8375 18948 bytes
SHA-256: ab8a98a574b4432360dc1e9afc79165dcf50d0624665ef8f9c7055b2cb908c7a

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