Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ced3fdfd23d29f6…

MALICIOUS

PDF

45.8 KB Created: 2021-05-13 16:39:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: f98494d0b1bc5aef19ebe46b6d21847d SHA-1: 6d575caee55804042286c1586e3cf6662cd499f5 SHA-256: 0ced3fdfd23d29f6bab746493337760879f484f71d41372d3d4d589899b50a0b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game-related items (Robux, hacks) to entice users. It contains multiple links to known malicious redirectors and other PDF files hosted on suspicious domains, indicating a phishing or malware distribution attempt. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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.xyz/app/431946152/free-robux-apk-game-hack In PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/minecraft-bedrock-free-download_GM479516143.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/easiest-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/free-spins-coin-master-without-completing-offers_GM406889139.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/coin-master-hack-co_GM406889139.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/free-spins-and-coins-com_GM406889139.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/how-to-get-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/how-to-get-free-spins-on-coin-master-without-waiting_GM406889139.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/minecraft-xbox-free_GM479516143.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/minecraft-online-free-no-download_GM479516143.pdfIn PDF document text
    • http://agrupamentoescolas-alfredo-da-silva.com/images/coin-master-free-link-app_GM406889139.pdfIn PDF document text
    • https://rblx.landIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004af8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AF8 25696 bytes
SHA-256: f09d2616ab8a9538d66c12565780513c414178706f4fa6a9f51f49d7f7e3e71c
font_01_sfnt_off000086d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86D1 2820 bytes
SHA-256: d88f25cfe237a714f996150a11dd8a058f0f7c3e9d1ae91c17b46c10409b6c0b
font_02_sfnt_off0000906c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x906C 18360 bytes
SHA-256: e9359734bc9145e2b26d31ba7f580aebc3bf98c57002eb6e857d81b76a5cddb9

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