Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ba48476a44bf74a…

MALICIOUS

PDF

33.4 KB Created: 2021-06-30 05:47:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 1f0f6796ee49bfa225b46f237c87f39a SHA-1: 382a7ec31bf0c5f7262696f694c9deff0adcf825 SHA-256: 8ba48476a44bf74a2763a7b1beccfd999f446a2514d96f8eb79399051a8e97bc
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 game currency or hacks, directing users to a known malicious redirector. The embedded URLs, such as 'http://netcdn.co/app/431946152/free-pants-roblox-boy-game-hack', are indicative of a phishing or scam campaign. While no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it's designed to exploit user interest in free items, likely leading to further malicious content or malware download.

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/free-pants-roblox-boy-game-hack In PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-get-free-robux-easy-way-2021_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/group-gives-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-roblox-dlls-hack_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-rs-roblox_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/best-app-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/script-hack-roblox-lumber-tycoon-2_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-toys-codes-hack_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-100-robux_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-hack-for-high-rank_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-get-free-robux-no-hack-no-download_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/how-to-make-free-items-on-roblox_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/rbl-robux-gives-hack_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/advertizes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/roblox-arsenal-hack-script_GM431946152.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://elib-s2.ubl.ac.id/repository/robux-cheat-net_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_off00002d01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D01 21960 bytes
SHA-256: 5d9dd6812b8873b6d2954ff02f88d7c962b6c27f375a1878551e4a78fa0b6f17
font_01_sfnt_off00005d55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D55 19088 bytes
SHA-256: 5b0a72d5fe3bb88d383cd748e2666e85cc9ed73a0825c33486d7b0265229c975

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