Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddafeb7dddf1c442…

MALICIOUS

PDF

35.9 KB Created: 2021-06-26 22:38:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 277e1eae5ebc7d7afa17f1de34a25833 SHA-1: de5c86646939c00480470a3759a7a60166a331ad SHA-256: ddafeb7dddf1c442ed8fa566d1821a5d8b61c3bc0bd0c0ffbec11cbb9aee1ae1
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/roblox-mining-sim-hack-pastebni-december-2021-pastebin-game-hack PDF link annotation
    • http://daskrimti-jabar.web.id/library/repository/mcpe-master-unlimited-coins-hack-apk_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/all-of-the-hairs-that-are-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-hacks-cheatscom_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/windows-10-minecraft-free-with-java_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/get-free-spins-coin-master-october-2021_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/download-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/coin-master-hack-version-ios_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-girl-avatar_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-robux-real-working_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/coin-master-hack-for-android_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/robux-sites_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/without-pokemon-go-free-download_GM1094591345.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-running-in-parkour-roblox_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/wizard-hacks_GM479516143.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_off000030fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30FB 22948 bytes
SHA-256: 98c1e7b5289b7f14b0b02cf6c010928843171a0cdbb87995163236b1d92e9728
font_01_sfnt_off00006477.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6477 20060 bytes
SHA-256: 553803fa103f73b2191855936d8d26b74522a82bee18ba08b5565e6389c60381

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