Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ddd11a417d919a0…

MALICIOUS

PDF

34.1 KB Created: 2021-06-19 06:22:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 99c18aa3708a112c686db29518fbb31b SHA-1: 1feb161734c77893523ec033126ec1cd32b8bf90 SHA-256: 0ddd11a417d919a0bbda990c470086b248f4843241564c4eb205192d82e8d6c2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirector infrastructure, specifically promoting 'game hacks' and 'cheats' for Roblox. The primary lure URL is http://netcdn.co/app/431946152/roblox-cheats-for-robux-no-download-game-hack, which is designed to trick users into downloading potentially unwanted or malicious software. The document body and embedded URLs strongly suggest a social engineering tactic to drive traffic to these malicious sites.

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.co/app/431946152/roblox-cheats-for-robux-no-download-game-hack In PDF document text
    • https://sanjoseelectricians.net/images/imba-tools-hack-roblox_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/minecraft-online-free-no-download_GM479516143.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/equillex-free-robux_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/pastebin-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/roblox-btool-hacks_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/free-dresses-for-roblox_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/how-do-you-finish-getting-free-robux_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/i-got-free-robux-doing-this_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/free-multiplayer-games-like-roblox_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/how-to-hack-your-rank-on-roblox_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/roblox-tshirt-free-2021_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/how-to-hack-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/how-to-create-clothes-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/free-stuff-hack-roblox_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/this-skin-cobonation-gives-you-free-robux_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/roblox-games-for-free-unblocked_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/cheat-engine-scripts-roblox_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/how-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/how-to-get-free-forgotten-knife-in-assasin-y-roblox_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_off00002dec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DEC 22312 bytes
SHA-256: 94c6ac1f81582a3b55792b9c1c1414bff306ead60cf980f6ecf3a1f952a33c28
font_01_sfnt_off00005f53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F53 19380 bytes
SHA-256: ca2af2977eb16f8ead11ee84f08a8a30a9fb68bc10b37de70fa6dea3dad57ac6