Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad2c2103beeaf76d…

MALICIOUS

PDF

66.8 KB Created: 2021-03-05 02:41:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 820a7988a8b05b33aacbb24326bde936 SHA-1: 4b500ef2b81f79ede8ac1552bf50a69f4620a70e SHA-256: ad2c2103beeaf76d1a002487794a81120572d05019b4923931400beb7aaeaf0b
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many pointing to PDFs hosted on S3 buckets, suggesting a link farm or SEO poisoning tactic. The primary lure URL, 'https://leonvi.ru/award?keyword=lowrance+elite-5+ti+touch+combo+with+chirp+sonar+%2526+hdi+transducer', is identified as an SEO redirector, indicating a phishing or malware distribution attempt. ClamAV detection and ML classification further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8672

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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 https://leonvi.ru/award?keyword=lowrance+elite-5+ti+touch+combo+with+chirp+sonar+%2526+hdi+transducer PDF link annotation
    • http://trokot-new.online/kelinokezexukukoredagowessu16b.pdfIn PDF document text
    • https://torewofatovamek.weebly.com/uploads/1/3/4/1/134108613/888319.pdfIn PDF document text
    • http://justiciaforjustice.com/sophos_antivirus_free_full_for_macnej1v.pdfIn PDF document text
    • https://vetolotex.weebly.com/uploads/1/3/1/3/131379132/zixujewewukut.pdfIn PDF document text
    • http://deutschebank-meine.com/what_does_1_tablet_twice_daily_mean8qcot.pdfIn PDF document text
    • https://zosufolukariv.weebly.com/uploads/1/3/4/7/134755865/6021677.pdfIn PDF document text
    • https://lokuzovitopoz.weebly.com/uploads/1/3/4/8/134871506/fawezusu.pdfIn PDF document text
    • http://urolog.xyz/54069961745c0we5.pdfIn PDF document text
    • http://xazufajemexeb.22web.org/51008343380.pdfIn PDF document text
    • https://mafenipo.weebly.com/uploads/1/3/4/8/134879688/mogosalukusewijof.pdfIn PDF document text
    • http://femokotafi.66ghz.com/calminex_ice_bula.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wovisak/64100031720.pdfIn PDF document text
    • https://s3.amazonaws.com/remavuj/4_pics_1_word_level_2459.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/14761707876.pdfIn PDF document text
    • https://s3.amazonaws.com/suxuzubojut/biological_science_let_reviewer_2018.pdfIn PDF document text
    • http://tatefubuzu.rf.gd/simple_harmonic_motion_exam_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/vezovozudivawasiba.pdfIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/zikiduviweginuromolati.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a63c862-89d2-4d88-9ab0-26d38e34aba0/33229017203.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c55f4d8b-75dd-4f88-8653-534a1bde51ab/jivatitatugidigosilugo.pdfIn PDF document text
    • http://wozawexopad.epizy.com/11136489550.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ee32dec-d195-4504-aeb3-b1142b7aeab5/formato_normas_apa_sexta_edicion_word_descargar.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/22177093605.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/cheats_for_gta_vice_city_android_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/putaziremorewuma.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/513ad397-338f-432c-bbf8-7424f2465f5c/high_pointe_microwave_convection_oven_ec028kd7.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f390.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF390 5504 bytes
SHA-256: a4c8c3408fbe8c04e4650d9bd775ef0e937f28c212d31271f17d44d1579bba24

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