Malicious PDF — malware analysis report

Static analysis result for SHA-256 395afe67332b39dc…

MALICIOUS

PDF

44.0 KB Created: 2021-06-11 00:56:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 080dbfba6d3fe523d30feb1b352032ee SHA-1: 759edf1c1a5241614f677ff9c5b3eea1166e29d4 SHA-256: 395afe67332b39dc1ab79887124db885248b76beea6ce802b072adf5a4817c66
212 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a prominent link disguised as a lure for free Robuxs, which redirects to a known malicious domain. The document body and embedded link heuristics indicate a clear intent to redirect users to potentially harmful content, likely for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to exploit user interaction.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

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.
  • 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.
  • 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.tw/app/431946152/click-here-now-for-free-robuxs-game-hack In PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/daily-spin_GM406889139.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/free-spin-gratis-coin-master_GM406889139.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/coin-master-32-mod-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/free-online-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/free-robux-link_GM431946152.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/cheat-engine-681-roblox_GM431946152.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/can-i-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/free-free-robux_GM431946152.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/how-often-pubg-uc-benefits-paid_GM1330123889.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/how-to-change-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/descargar-coin-master-hack_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_off00005134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5134 26808 bytes
SHA-256: 4678455d11061b8e90c71f28e29a3bed521a02228b11190e0d3b4a8f20cdaed8
font_01_sfnt_off00008de4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DE4 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4

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