Malicious PDF — malware analysis report

Static analysis result for SHA-256 34e0a125c819d8b5…

MALICIOUS

PDF

35.8 KB Created: 2021-06-30 06:16:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 0b5275f4627426e178fba6c72722720b SHA-1: 1d6fde05e3c4d09fb88b809c65b026f2f34ebd98 SHA-256: 34e0a125c819d8b50af770abe56647774486e84eb80927b1a57beb9e1dec9c35
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external sites, including a known malicious redirector at http://netcdn.co/app/431946152/what-do-you-do-when-your-roblox-account-is-hacked-game-hack. The document body and heuristics indicate a lure related to game hacks and account security, likely intended to drive users to download malicious content or visit further compromised sites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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.
  • 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.
  • 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/what-do-you-do-when-your-roblox-account-is-hacked-game-hack In PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/by-pubg-uc_GM1330123889.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/how-to-make-shirts-for-free-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/how-to-get-free-things-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/hacked-by-blox-watch-roblox_GM431946152.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/como-tener-ropa-en-roblox-sin-hacks-ni-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/get-free-cards-coin-master_GM406889139.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/roblox-avatar-free_GM431946152.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/coin-master-heaven-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/1-000-subscriber-roblox-hack-tool_GM431946152.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/coin-master--hack_GM406889139.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/coin-master-free-spins-cheats_GM406889139.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/free-robux-proof-2021_GM431946152.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/roblox-dll-hack-52021_GM431946152.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.angelsbasket.com/uploaded_files/userfiles/files/roblox-pink-free-robux_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_off0000336e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x336E 22236 bytes
SHA-256: 6badd82ef21cf6705ccbbe811fcb2c1ed256ea24ce2aeb1207aeb8bc4645be92
font_01_sfnt_off000064d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64D6 19768 bytes
SHA-256: 2243066901b5a47932041dcce398c282bc61aead534ee998e40fba5be5d154a3