Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bd2958da6b7c194…

MALICIOUS

PDF

201.5 KB Created: 2018-04-25 16:45:10 +03:00 Authoring application: wkhtmltopdf 0.12.4 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e1898f18517ad91816f723840e613f22 SHA-1: bab7fba95f64ae6420089bd6e13644ff312bb2ed SHA-256: 1bd2958da6b7c194c3a5cd2a1944bd0cd9921c7408272cfc1db44a7f6c191b4e
74 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains an embedded URL that redirects to a suspicious domain, identified as a potential phishing or malware download lure. The heuristic 'PDF_SEO_UTM_REDIRECTOR_LINK' specifically flags this as an image lure leading to an SEO redirector. No scripts were extracted, but the presence of the malicious URL strongly suggests a malicious intent to redirect the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7668

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=%D1%80%D0%B5%D1%88%D0%B5%D0%B1%D0%BD%D0%B8%D0%BA+%D0%BF%D0%BE+%D0%B0%D0%BD%D0%B3%D0%BB%D0%B8%D0%B9%D1%81%D0%BA%D0%BE%D0%BC%D1%83+2+%D0%BA%D0%BB%D0%B0%D1%81%D1%81+%D1%80%D0%B0%D0%B1%D0%BE%D1%87%D0%B0%D1%8F+%D1%82%D0%B5%D1%82%D1%80%D0%B0%D0%B4%D1%8C+%D0%BC%D0%B8%D0%BB%D0%BB%D0%B8 PDF link annotation
    • http://renimba.info/wp1?keyword=%D1%80%D0%B5%D1%88%D0%B5%D0%B1%D0%BD%D0%B8%D0%BA+%D0%BF%D0%BE+%D0%B0%D0%BD%D0%B3%D0%BB%D0%B8%D0%B9%D1%81%D0%BA%D0%BE%D0%BC%D1%83+2+%D0%BA%D0%BB%D0%B0%D1%81%D1%81+%D1%80%D0%B0%D0%B1%D0%BE%D1%87%D0%B0%D1%8F+%D1%82%D0%B5%D1%82%D1%80%D0%B0%D0%B4%D1%8C+%D0%BC%D0%B8%D0%BB%DPDF link annotation
    • https://inpetfipen1982.files.wordpress.com/2018/04/gepitefetaxav-artist-korenev-biografiia-buriatskie-korni-vadeg.pdfIn PDF document text
    • https://img0.liveinternet.ru/images/attach/d/0//5906/5906166_sinosomreshebnikpoliteratureboikina2klasskosomun.pdfIn PDF document text
    • https://cianahaskio1976.files.wordpress.com/2018/04/podeziwokuvo-bilet-v-avstraliiu-iz-moskvy-biznes-klassa-lusum.pdfIn PDF document text
    • https://golddocklange1971.files.wordpress.com/2018/04/kuwaw-chasto-mne-vspominaetsia-vremia-kogda-nas-shkolnikov-sochinenie-ege-vetujumunubawa.pdfIn PDF document text
    • https://img0.liveinternet.ru/images/attach/d/0//5908/5908182_jomopukproveritrezultatyege2017pokhimiipopasportnymdannymdunemu.pdfIn PDF document text
    • https://soareconpunc1988.files.wordpress.com/2018/04/nibeme-probnyi-ege-po-russkomu-iazyku-2017-onlain-testy-reshat-s-otsenkoi-rowevusemo.pdfIn PDF document text
    • https://img1.liveinternet.ru/images/attach/d/0//5907/5907107_niwepokgdzpokhimii8klassuchebniknovoshinskii2009dato.pdfIn PDF document text
    • https://hyapuwatchre1980.files.wordpress.com/2018/04/bitijafosipovu-gdz-po-matematike-5-klass-vilenkin-nomer-1337-andrei-midekolivevi.pdfIn PDF document text
    • https://inernutbang1982.files.wordpress.com/2018/04/xavimijuditi-sochinenie-na-temu-doverie-primer-iz-zhizni-fumet.pdfIn PDF document text
    • https://pupmerobesch1984.files.wordpress.com/2018/04/xupiluwazimi-kak-skachat-film-s-ivi-na-aipad-zataxugowi.pdfIn PDF document text
    • https://inpetfipen1982.files.wordpress.com/2018/04/kemar-retsept-smuzi-s-bananom-i-ovsianymi-khlopiami-dadikevarutow.pdfIn PDF document text
    • https://prooflichamko1985.files.wordpress.com/2018/04/jedubemor-ip-adres-dlia-mainkraft-1-10-2-dosigejeb.pdfIn PDF document text
    • https://manryleramb1975.files.wordpress.com/2018/04/mekizor-skachat-transformery-praim-4-sezon-nudatenuvijuz.pdfIn PDF document text
    • https://prupaqrestio1977.files.wordpress.com/2018/04/xuwafizebuvaw-torrent-fantasticheskie-zveri-i-mesta-ikh-obitaniia-film-fisubuvaworoku.pdfIn PDF document text
    • https://img0.liveinternet.ru/images/attach/d/0//5908/5908503_fevgdzpomatematikeza5klasszadachnikeabunimovichgep.pdfIn PDF document text
    • https://golddocklange1971.files.wordpress.com/2018/04/kuwaw-chasto-mne-vspominaetsia-vremia-kogda-nas-shkolnikov-sochinenie-ege-In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000a4af.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xA4AF 1485561 bytes
SHA-256: 1718db8b7c6a44712dc1b3acee434281abf7527ebf6ea299260c2277eb5af585
font_00_sfnt_off0002bf67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BF67 29720 bytes
SHA-256: 6e81cc27cdc2c98e25c22cf87a933e093018709ca9bf686228b7f0cb1fe387a5
font_01_sfnt_off00030323.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30323 16192 bytes
SHA-256: 53017bd7a30dee5d665afb4c3c39690c44f26ac0c1b05217190c0cb54cdf5faf

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