Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ba8d01517d3febd…

MALICIOUS

PDF

47.1 KB Created: 2021-05-17 12:46:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 690df5e44f499b21215c51e16cd3b5fe SHA-1: 8d989abc5199edb47222361ceec0d2d69bdac496 SHA-256: 1ba8d01517d3febde9da2c78c5ec4f682f7a28ff97dbe98c0f963b328d3440ae
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links, specifically luring users with 'free generator / game hack' content. The primary embedded URL directs to a site associated with game hacks, likely a phishing or malware distribution front. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/406889139/how-to-get-free-coins-in-coin-master-game-game-hack In PDF document text
    • http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/static-moonactive-net_GM406889139.pdfIn PDF document text
    • http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/how-to-get-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/free-links-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/coin-master-update-2021_GM406889139.pdfIn PDF document text
    • http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/https-iosgodscom-topic-20218flipmastercoinshack_GM406889139.pdfIn PDF document text
    • http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/can-you-earn-robux_GM431946152.pdfIn PDF document text
    • http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/hack-coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/how-to-get-free-coins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/roblox-verification_GM431946152.pdfIn PDF document text
    • http://www.pustakaekspresi.com/new/public/ckfinder/userfiles/files/coin-master-2021-free-spins-link_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_off00004eda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EDA 30508 bytes
SHA-256: 4d30b94e10316b83015092a6c9a682081112eb42cd0f7c52ec4b214f575b4267
font_01_sfnt_off00008ccc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CCC 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off0000967d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x967D 18136 bytes
SHA-256: c27ce28ced2cd6ab43782601ea0ea90fe7d4241e5cbb0f725251c39d19020edf

Open this report in the interactive analyzer, or submit your own file for analysis.