Malicious PDF — malware analysis report

Static analysis result for SHA-256 d025f69951a73fa4…

MALICIOUS

PDF

42.6 KB Created: 2021-05-18 00:04:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 2896f4fe0a443b2dedd113bdf87de109 SHA-1: a088d3f2d9b778af9978ad18f8b7d64e7ed88f44 SHA-256: d025f69951a73fa4b5625b8f62770f77a55aeb56bf7b4e7d8b961e30b60bc91b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, including one identified as a malicious redirector. The document body and heuristics suggest a lure for game-related cheats or currency, which is a common tactic for distributing malware or phishing for credentials. The embedded links likely lead to further malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/free-robux-thumbnail-game-hack In PDF document text
    • https://encounternepal.com/userfiles/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/coin-master-hack-download-apk_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/free-minecraft-domain_GM479516143.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/10-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/roblox-devil_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/free-roblox-usernames-and-passwords_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/coin-master-hack-ios-without-verification_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/minecraft-survival-free_GM479516143.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/download-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/coin-master-levels_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/coin-master-spin-link-today-free_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/free-spins-link-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/hack-coin-master-8-ball-pool_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/download-coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/best-roblox-hacks_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_off000048f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48F4 24980 bytes
SHA-256: b60a5df508d2275c90a4a6d6111542c1e56beb5024117677e470f98e90a6ab3f
font_01_sfnt_off0000828b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x828B 18864 bytes
SHA-256: c969eb26f29950990ddccbf0eeab0a7af3119d1c9c7ebc0fee97903357bc58cd

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