Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcc5991dc300449a…

MALICIOUS

PDF

222.8 KB Created: 2018-04-25 18:14:29 +03:00 Authoring application: wkhtmltopdf 0.12.4 (via Qt 4.8.7) First seen: 2021-06-13
MD5: c923637fdc8d851459a00ffe8aaec53d SHA-1: ca1ebbff623d8fe0e3cfe63cfb079bd0965d7d39 SHA-256: fcc5991dc300449a08a5e79bb2be09e6e4ebebb89cd5b2ced9cbd55be822c5fa
74 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an external URI and a redirector link that points to a website designed to lure users with educational content. This pattern is commonly used for phishing or scamming operations. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7273

Heuristics 3

  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://renimba.info/wp1?keyword=%D0%B3%D0%BE%D1%82%D0%BE%D0%B2%D1%8B%D0%B5+%D0%BE%D1%82%D0%B2%D0%B5%D1%82%D1%8B+%D0%BF%D0%BE+%D0%BC%D0%B0%D1%82%D0%B5%D0%BC%D0%B0%D1%82%D0%B8%D0%BA%D0%B5+3+%D0%BA%D0%BB%D0%B0%D1%81%D1%81+%D0%B4%D0%B5%D0%BC%D0%B8%D0%B4%D0%BE%D0%B2%D0%B0+%D0%BA%D0%BE%D0%B7%D0%BB%D0%BE%D0%B2%D0%B0+%D1%82%D0%BE%D0%BD%D0%BA%D0%B8%D1%85 PDF link annotation
    • http://renimba.info/wp1?keyword=%D0%B3%D0%BE%D1%82%D0%BE%D0%B2%D1%8B%D0%B5+%D0%BE%D1%82%D0%B2%D0%B5%D1%82%D1%8B+%D0%BF%D0%BE+%D0%BC%D0%B0%D1%82%D0%B5%D0%BC%D0%B0%D1%82%D0%B8%D0%BA%D0%B5+3+%D0%BA%D0%BB%D0%B0%D1%81%D1%81+%D0%B4%D0%B5%D0%BC%D0%B8%D0%B4%D0%BE%D0%B2%D0%B0+%D0%BA%D0%BE%D0%B7%D0%BB%D0%BE%DPDF link annotation
    • https://img0.liveinternet.ru/images/attach/d/0//5906/5906974_bubgdznimetskamova6klassidorenkopalii2015robochiizoshitdup.pdfIn PDF document text
    • https://golddocklange1971.files.wordpress.com/2018/04/bomivo-propisi-dlia-1-klassa-raspechatat-bukvy-i-soedineniia-kartinki-sibevedi.pdfIn PDF document text
    • https://folkwalatan1981.files.wordpress.com/2018/04/pujav-skachat-reshebnik-po-fizike-7-klass-peryshkin-pdf-tisusarevilosul.pdfIn PDF document text
    • https://inpetfipen1982.files.wordpress.com/2018/04/togegug-zadaniia-po-tsitologii-ege-po-biologii-2016-tibaze.pdfIn PDF document text
    • https://notlicesca1974.files.wordpress.com/2018/04/ninobiteluveju-pochemu-nado-rasstatsia-s-muzhchinoi-kniga-tixezu.pdfIn PDF document text
    • https://natejuggnber1976.files.wordpress.com/2018/04/pibejubiput-prostye-ekonomnye-deshevye-retsepty-xazupapinib.pdfIn PDF document text
    • https://emclenorpor1977.files.wordpress.com/2018/04/lenafen-navigator-skachat-besplatno-na-kompiuter-na-russkom-iazyke-vuligapunaw.pdfIn PDF document text
    • https://damdispgenja1970.files.wordpress.com/2018/04/naziveboz-postnyi-bananovyi-tort-retsept-s-foto-suxosolewitu.pdfIn PDF document text
    • https://drowgeifrasce1988.files.wordpress.com/2018/04/vuganak-neutron-music-player-dlia-android-otzyvy-lokiven.pdfIn PDF document text
    • https://manryleramb1975.files.wordpress.com/2018/04/libasaf-gdz-po-chercheniiu-8-klass-botvinnikov-vinogradov-2012-jijapukabi.pdfIn PDF document text
    • https://img1.liveinternet.ru/images/attach/d/0//5907/5907883_regeprofilmatematikaege2017testonlainlugisi.pdfIn PDF document text
    • https://img0.liveinternet.ru/images/attach/d/0//5908/5908472_fegebgdzpoalgebre7klassmakarychev19992003buwu.pdfIn PDF document text
    • https://killhinlikid1987.files.wordpress.com/2018/04/bifuxiri-stiralnaia-mashina-lg-wd-80130t-instruktsiia-nupalusabutude.pdfIn PDF document text
    • https://notlicesca1974.files.wordpress.com/2018/04/bobuj-dokuchaev-vasilii-vasilevich-kratkaia-biografiia-interesnye-fakty-iz-zhizni-dutelajofizuno.pdfIn PDF document text
    • https://golddocklange1971.files.wordpress.com/2018/04/jaxomesan-statgrad-matematika-ege-tudalovam.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn extracted file (font_00_sfnt_off0003110b.bin)

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_002_off0000a4bd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xA4BD 1485561 bytes
SHA-256: 1718db8b7c6a44712dc1b3acee434281abf7527ebf6ea299260c2277eb5af585
font_00_sfnt_off0003110b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3110B 32664 bytes
SHA-256: ed2a06fcfb37150013296e7aa9b1f10725fac82fac73ec7d69ed7e2e66098521
font_01_sfnt_off00035a15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35A15 15576 bytes
SHA-256: 36fc051cb52d4baa75b303c199e1b2ce53e10fc29f9cd22bfaca02e3445ac423

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