Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4d0bf8a72db92a7…

MALICIOUS

PDF

44.8 KB Created: 2021-05-16 08:00:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 3378ac013944d8a7f9ac31c18167361f SHA-1: 62d0ce7e589b7c91fa141b658a1b5b61e41098af SHA-256: f4d0bf8a72db92a765846946d81ebace9c14b1c502db2e7244d39e1cdec7b653
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as "free generator / game hack" lures. The ML classifier also flagged this document as malicious. The primary attack pattern involves tricking the user into clicking these links, which likely leads to further malicious content or malware downloads. No scripts were extracted, but the embedded links are the main indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/479516143/minecraft-free-demo-game-hack In PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/coin-master-hack-spin-160-pro_GM406889139.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/free-roblox-accounts-generator_GM431946152.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/how-to-get-stuff-that-cost-coins-free-mpe-master_GM406889139.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/how-do-you-get-roblox-money_GM431946152.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/coin-master-spin-link-hack_GM406889139.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/flame-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/minecraft-free-download-pc_GM479516143.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/coin-master-free-spins-through-coin-pop_GM406889139.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/coin-master-spin-blogspot_GM406889139.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/download-coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://xn----7sbq6amdnuk.xn--p1ai/images/coin-master-coins-free_GM406889139.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
font_00_sfnt_off00004961.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4961 25504 bytes
SHA-256: 84bb7be12064b150d7dab29f77003bfed17e7b3c8f23a7d636bd294ff7b4b470
font_01_sfnt_off00008310.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8310 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008cfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CFB 18140 bytes
SHA-256: 0536168ac90d64eb009e64b37040528b80b37c7a826300234d0294943182c78a

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