Malicious PDF — malware analysis report

Static analysis result for SHA-256 edc1d19a9d66d80f…

MALICIOUS

PDF

34.0 KB Created: 2021-06-26 13:46:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 09bbe8191b8ec4bd29dc91a4cab1a8cc SHA-1: 7543f950bf130cb04c1eaf95c0d05380ec51e801 SHA-256: edc1d19a9d66d80fa0c520b5ff26e87017654748951ff5596d11c9626f67a528
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating it links to malicious redirectors, specifically promoting 'free generator / game hack' lures for popular games like Roblox. The embedded URL directs to a known malicious domain, likely serving as a gateway to further malicious content or exploits. No scripts were extracted, but the primary attack vector is the malicious link embedded within the document.

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/well-hack-net-free-unlimited-robux-in-roblox-game-hack In PDF document text
    • https://www.tena-g.hr/files/free-minecraft-skins-xbox-one_GM479516143.pdfIn PDF document text
    • https://www.tena-g.hr/files/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/free-robux-hack-no-verification-need-no-password-needed_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/minecraft-kill-aura_GM479516143.pdfIn PDF document text
    • https://tena-g.hr/files/coin-master-com_GM406889139.pdfIn PDF document text
    • https://tena-g.hr/files/minecraft-pe-hack-client-2021_GM479516143.pdfIn PDF document text
    • https://www.tena-g.hr/files/roblox-pics_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://www.tena-g.hr/files/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • https://tena-g.hr/files/robux-hack-2021-mobile_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/coin-master-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • https://www.tena-g.hr/files/how-to-get-minecraft-for-free-on-xbox-360_GM479516143.pdfIn PDF document text
    • https://www.tena-g.hr/files/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • https://tena-g.hr/files/minecraft-pe-hacked-client-download_GM479516143.pdfIn PDF document text
    • https://www.tena-g.hr/files/how-to-play-coin-master_GM406889139.pdfIn PDF document text
    • https://tena-g.hr/files/free-robux-https-robuxplanet-com-r_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/minecraft-free-download-laptop_GM479516143.pdfIn PDF document text
    • https://www.tena-g.hr/files/free-coins-coin-master-2021_GM406889139.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_off00002d25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D25 22036 bytes
SHA-256: 2af2972b0e0eee4c4aba7eed3e27fcc8da8907acb8da84e460355692bab61363
font_01_sfnt_off00005dc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DC1 19816 bytes
SHA-256: 79dacd2c96844bd9680b8fc308f16fdd60d8a1d7b9b148691753f2649447f799