Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fe0ada2f51d487d…

MALICIOUS

PDF

49.1 KB Created: 2021-06-01 06:02:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 3bc1130ac839826fafb0d47dec02730a SHA-1: 93a64298ba951a61126176b0c2bcb24a097c9068 SHA-256: 7fe0ada2f51d487dd9d72ee273d038c4a857ab2f6e69a4fe6c432c057f05918f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector disguised as a game hack generator. The embedded URL leads to a page that likely attempts to download further malicious content or redirect the user to a phishing site. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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/cheat-bad-business-roblox-game-hack In PDF document text
    • https://sktc.se/wp-content/uploads/fsqm-files/robux-free-com_GM431946152.pdfIn PDF document text
    • https://sktc.se/wp-content/uploads/fsqm-files/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://sktc.se/wp-content/uploads/fsqm-files/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://sktc.se/wp-content/uploads/fsqm-files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://sktc.se/wp-content/uploads/fsqm-files/give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://sktc.se/wp-content/uploads/fsqm-files/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://sktc.se/wp-content/uploads/fsqm-files/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://sktc.se/wp-content/uploads/fsqm-files/how-to-hack-someones-roblox-account-on-pc_GM431946152.pdfIn PDF document text
    • https://sktc.se/wp-content/uploads/fsqm-files/roblox-hack-com_GM431946152.pdfIn PDF document text
    • https://sktc.se/wp-content/uploads/fsqm-files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://sktc.se/wp-content/uploads/fsqm-files/level-7-lua-executor-free-hack-roblox_GM431946152.pdfIn PDF document text
    • https://sktc.se/wp-content/uploads/fsqm-files/v3rmillion-roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://sktc.se/wp-content/uploads/fsqm-files/secret-cheats-for-roblox_GM431946152.pdfIn PDF document text
    • https://sktc.se/wp-content/uploads/fsqm-files/how-to-get-free-robux-2021-october_GM431946152.pdfIn PDF document text
    • https://sktc.se/wp-content/uploads/fsqm-files/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://sktc.se/wp-content/uploads/fsqm-files/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • https://sktc.se/wp-content/uploads/fsqm-files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://sktc.se/wp-content/uploads/fsqm-files/how-to-get-robux-hack-that-really-works_GM431946152.pdfIn PDF document text
    • https://sktc.se/wp-content/uploads/fsqm-files/hacks-para-cb-ro-roblox_GM431946152.pdfIn PDF document text
    • https://sktc.se/wp-content/uploads/fsqm-files/free-money-in-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000055ac.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x55AC 27464 bytes
SHA-256: ecacbab725082efd937850dfb5770307645e59b8743e762279b077f05070579c
font_01_sfnt_off0000921b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x921B 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00009c05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C05 18716 bytes
SHA-256: ce4fbdfc1d937345c992e9d03cea3fc773cadf54eb337f20b56043b0fdbe7487

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