Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8fde2df8a033de2…

MALICIOUS

PDF

34.0 KB Created: 2021-07-01 00:02:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 3c074a53644a07f3174ecd4c3751ac19 SHA-1: aa049f48fe58b02078ac83097d249ffddbbe561d SHA-256: e8fde2df8a033de2670bad4242bffdb56a0fe15d3b1810cfea20ee7b8109d3a9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links, including one to a known malicious redirector infrastructure. The document body and heuristics indicate a lure for 'free generator / game hack' content, likely to trick users into visiting malicious sites. No scripts were extracted, but the presence of embedded URLs and the nature of the lure suggest a phishing or scam attempt.

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.co/app/431946152/all-free-for-catalog-roblox-pastebin-game-hack In PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-get-know-it-all-face-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/dantdm-free-robux-code_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-get-a-free-bag-in-roblox_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/vbbwcom-free-robux_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-vip-gamepass-free_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/como-hackear-vehicle-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-robux-gratis_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-roblox-injector-september-2021_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-parris-island-roblox_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-get-free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-catalog-free-stuff-hack_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/robux-free-com_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-robux-no-download-or-human-verification_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/astuce-hack-robux_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003005.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3005 21764 bytes
SHA-256: 78eb2ee24623346904d5404d5f8ce743794d4ce5dda5fc4d45412a0a61a7642f
font_01_sfnt_off00005fbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FBF 19028 bytes
SHA-256: 906a3d60fa00e7779705088abd142c4d0f9263b5b08c7b2b379c53b52a2a3405

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