Malicious PDF — malware analysis report

Static analysis result for SHA-256 076f13e43d0a796a…

MALICIOUS

PDF

35.2 KB Created: 2021-07-04 10:53:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 2e0b91bbfd2b403a237a8d51cfe08a3f SHA-1: 68bcaf7530c29994fef7f408459c21416706c141 SHA-256: 076f13e43d0a796a9a64a8647926802d92fad678b8d745ea738fbce2efd9cb59
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure for free Robux, directing users to a known malicious redirector infrastructure. The document's content and embedded links strongly suggest a phishing or scam attempt, likely leading to further malicious downloads or exploits. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/how-to-get-free-robux-without-doing-anything-game-hack In PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-real-free-robux-game_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-hack-the-legendary-swords-2-rpg-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/counter-strike-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/robux-redeem-code-hack_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-cheat-engine-hack_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-attrition-hack_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/hack-de-robux-funcionando-2021-100-para-hacer-bromas_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-games-download-free_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/robux-come_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/red-roblox-shorts-free_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-free-robux-world_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-roblox-commercial_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-studio-free-download-windows-10_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-use-cheat-engine-in-roblox-after-patch_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/rbx-points-get-free-robux-points_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/como-conseguir-robux-con-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_off00003248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3248 21720 bytes
SHA-256: aeeb7539d7461ea2c36d6081a15bdf9385b381e9a772ce877890058f18b68665
font_01_sfnt_off00006232.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6232 19816 bytes
SHA-256: a89a9c26f3e3a3213b52b81013f05ff3695d44fb7be09e02fac6d25675b35ef4

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