Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b8005e4736f668e…

MALICIOUS

PDF

71.5 KB Created: 2021-02-06 17:28:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: bf76936e6e8ff8c43c78ec704e2361f7 SHA-1: 230be7b09a73e59eefe28170ccff03f81ca04956 SHA-256: 1b8005e4736f668e9de136a8d30f53ab61dde470304be015e268ec52ad5266d9
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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.
  • 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://crophysi.ru/wb?keyword=casting%20crowns%20effingham%20performance%20center%20august%201 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367299/normal_601e40dcb92bf.pdfIn PDF document text
    • https://cdn.sqhk.co/xafeperale/hjijeib/punch_club_fighting_tycoon_apk_1._36.pdfIn PDF document text
    • https://cdn.sqhk.co/ninivaxibab/Xvpidij/tubemate_for_windows.pdfIn PDF document text
    • https://cdn.sqhk.co/revinoxu/jedNJsd/ratanujikeloniximidaxu.pdfIn PDF document text
    • https://cdn.sqhk.co/mofipife/iezteje/kozifuvubivo.pdfIn PDF document text
    • https://cdn.sqhk.co/mopewedote/8jbWjgk/vusabobusatizores.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419820/normal_5fc5a9fbad767.pdfIn PDF document text
    • http://nutejujaxi.66ghz.com/annamalai_old_movie_ringtone.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475208/normal_5fc9cbe02366b.pdfIn PDF document text
    • https://cdn.sqhk.co/pafevola/dln00RU/marketplace_mall_stores.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413714/normal_5ffd0abc13870.pdfIn PDF document text
    • http://gemajesubon.22web.org/exemple_de_biographie_personnelle.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463286/normal_5ff766113356b.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/bevekizadoxuj/70003906955.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/nabavukoj.pdfIn PDF document text
    • https://s3.amazonaws.com/wewuxuviwar/benson_idahosa_books_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/684308251.pdfIn PDF document text
    • http://wexugemo.epizy.com/amnesia_character_song_collection.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_off0000d817.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD817 5448 bytes
SHA-256: 17bc8464a5d46fd686812f90067332862d51796f183739e4ebf6ef758ca381cd
font_01_sfnt_off0000ea8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA8E 11696 bytes
SHA-256: 22b40d0198db32d8cce6d871dca5b03961d8f67bdff5f9427ef6437d67939471

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