Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5aef6ee2e5a5570…

MALICIOUS

PDF

44.0 KB Created: 2021-06-04 03:23:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 6d1b8faa5ef2583d05a2d5c08034146b SHA-1: 6b4ca2824dc5d5ba22228d373c699e85fdb159a3 SHA-256: a5aef6ee2e5a55708ccf5eb76aa767bcea2a3cc72ad343bec8c1e2c1debbd064
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors, including one explicitly identified as malicious and associated with 'game hacks' and 'free generators'. The document body and embedded links suggest a social engineering lure to trick users into visiting malicious sites, likely for malware distribution or phishing. No scripts were extracted, but the presence of embedded URLs and the nature of the lures strongly indicate a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.online/app/431946152/how-to-hack-to-get-robux-game-hack In PDF document text
    • http://library.itekes-bali.ac.id/repository/free-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spinv1-0apkpure-com-apk_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-roblox-gift-card_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-spins-on-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-box_GM406889139.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_off0000506c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x506C 25404 bytes
SHA-256: 24803bb0f500081df78016260ebbb41e5c4c6b4b43384cd690383d346d9c2369
font_01_sfnt_off00008881.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8881 18516 bytes
SHA-256: e2a97b64806b22db336191728b408e5b7179700d4ee5fd3b4b30addea2706a3c

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