Malicious PDF — malware analysis report

Static analysis result for SHA-256 8960693edcccc2e6…

MALICIOUS

PDF

43.3 KB Created: 2021-05-13 04:25:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: f82ef46600fb1353fee692ecd8c7ad57 SHA-1: be05883353b1258a2f902e357a144bd611b6ccf6 SHA-256: 8960693edcccc2e6178fc2d4a918cd6101114ab1c4cbe42aef0463dfe6104c18
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors and SEO-optimized PDF files, all related to game hacks and free currency. One critical heuristic indicates the PDF links to a known malicious redirector infrastructure. The document body, though partially corrupted, contains references to 'Dailyrobux' and URLs matching the heuristic findings, suggesting a lure for potentially unwanted or malicious content. No scripts were extracted, but the overall pattern points to a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 5

  • 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.
  • 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.
  • 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/dailyrobux-game-hack In PDF document text
    • http://gaeconsultores.cl/images/free-coins-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://gaeconsultores.cl/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://gaeconsultores.cl/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://gaeconsultores.cl/images/coin-master-hack-spins_GM406889139.pdfIn PDF document text
    • http://gaeconsultores.cl/images/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • http://gaeconsultores.cl/images/coin-master-map_GM406889139.pdfIn PDF document text
    • http://gaeconsultores.cl/images/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://gaeconsultores.cl/images/get-free-spins-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://gaeconsultores.cl/images/coin-master-free-spins-links-2021_GM406889139.pdfIn PDF document text
    • http://gaeconsultores.cl/images/coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://gaeconsultores.cl/images/coin-master-promo-code-2021_GM406889139.pdfIn PDF document text
    • http://gaeconsultores.cl/images/best-way-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://gaeconsultores.cl/images/free-roblox-generator-for-roblox_GM431946152.pdfIn PDF document text
    • http://gaeconsultores.cl/images/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://gaeconsultores.cl/images/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://gaeconsultores.cl/images/coin-master-free-spin-sites_GM406889139.pdfIn PDF document text
    • http://gaeconsultores.cl/images/coin-master-hack-apk-link_GM406889139.pdfIn PDF document text
    • http://gaeconsultores.cl/images/hack-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://gaeconsultores.cl/images/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://gaeconsultores.cl/images/how-to-hack-coin-master-android_GM406889139.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
stream_003_off000047a3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47A3 27332 bytes
SHA-256: 17ad5e4058b7eabafea69f7823ae8081ec3e7a5d26cae8e49b31dc7dc564a70f
font_01_sfnt_off00008609.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8609 18620 bytes
SHA-256: 006376ad9c7b73d4fd15d3b6dd3ffa9064f0af8ff6d6cdc29d45d1e9c8c3f0f5

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