Malicious PDF — malware analysis report

Static analysis result for SHA-256 b411ef45f920e274…

MALICIOUS

PDF

79.2 KB Created: 2021-02-01 02:47:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 45d19a95487502755fcb72cb5654f1e4 SHA-1: 4e49c5070cdc50ba871ae854ef6f76eb95e057b7 SHA-256: b411ef45f920e274b6050a3228f07539421aee14abbd155158541b88d2b615a5
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document identified as malicious by ClamAV and an ML classifier. It contains an external URI and a redirector link pointing to 'https://seumenha.ru/123?utm_term=pecan+prices+south+africa', which is described as an SEO redirector for free-download phishing. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and a date, suggesting it was generated programmatically. No scripts were extracted, but the presence of a redirector strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://seumenha.ru/123?utm_term=pecan+prices+south+africa PDF link annotation
    • http://parhelifrl.space/5895971442b4tc8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379722/normal_5fd1e0b241e8c.pdfIn PDF document text
    • http://contentmedialiteracy.com/hockey_pub_quiz_questions0l2bx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467561/normal_5fe083b36cfb3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493227/normal_5ff2fc233c4b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421466/normal_5fd670c6d78b5.pdfIn PDF document text
    • http://varnisvakq.ru/photo_finish_horse_racing_promotional_code7r43t.pdfIn PDF document text
    • http://goodik.fun/17389057743v5vjk.pdfIn PDF document text
    • http://maximizator.online/phoenix_arizona_apartments_85002nmgbl.pdfIn PDF document text
    • http://dsv-trening.ru/microban_24_hour_sanitizing_spray_canadan118m.pdfIn PDF document text
    • http://ostanni.fun/wonifolawivavuwatedeqbj.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/votubukaxogilix/excel_2016_bedingte_formatierung_formel_zwei_bedingungen.pdfIn PDF document text
    • https://s3.amazonaws.com/difigomisosak/ahtisa_manalo_winning_answer.pdfIn PDF document text
    • http://guputawa.rf.gd/dutawelakigasotujugivafi.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/32890887605.pdfIn PDF document text
    • https://s3.amazonaws.com/tobobowu/50956762665.pdfIn PDF document text
    • https://s3.amazonaws.com/dofufiri/bonanza_episode_guide_season_5.pdfIn PDF document text
    • https://s3.amazonaws.com/kelukakeb/betternet_free_vpn_proxy_app_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/mariam_khan_reporting_live_final_episode.pdfIn PDF document text
    • http://todonoto.epizy.com/jomadaruzidojen.pdfIn PDF document text
    • http://bipaxoxibiva.rf.gd/48903346167.pdfIn PDF document text
    • https://s3.amazonaws.com/xepululejiwof/98655268681.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7CD 5072 bytes
SHA-256: d0533ce8e77f907f8822a8a05a764f776e85e4eaa5d5b2812ec4da865c8295d0
font_01_sfnt_off0001090d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1090D 10928 bytes
SHA-256: 7220545a850038cfbf0dc06af8beee205514ae591b150fb82911cf4d79b2200f

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