Malicious PDF — malware analysis report

Static analysis result for SHA-256 58e736ae94df2f7b…

MALICIOUS

PDF

64.4 KB Created: 2021-02-07 14:09:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4d8ec2db534e1bce1b8c3a9102886ced SHA-1: 1e5af8c597e12fb21b10cccea67b8406d3b0d96a SHA-256: 58e736ae94df2f7b309224f2b0efc8ecfe15bfd4df121113c143d1fdcc62ceda
136 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
  • 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://jacksth.ru/aws?utm_term=woolworths+cake+order+form PDF link annotation
    • http://leomannapov.com/38300107570ppwx7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451566/normal_5fff830cc2cdc.pdfIn PDF document text
    • http://vovality.club/mike_v_skateboard_party_pro_apkpurep9xmw.pdfIn PDF document text
    • http://daimontimur.org/lucy_the_doctor_is_in6938x.pdfIn PDF document text
    • https://bamufikike.weebly.com/uploads/1/3/1/6/131606241/xuvoforub_dilukopuv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382948/normal_5ff77fbd3bd28.pdfIn PDF document text
    • http://telemprom.xyz/business_line_newspaper_freegl2yt.pdfIn PDF document text
    • https://cdn.sqhk.co/mukibusu/bfthdlj/virus_infection_rate_uk_today.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380523/normal_5fdfb094d5e46.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421354/normal_5fe40b0d4d52c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379618/normal_5fdb013ac8696.pdfIn PDF document text
    • https://cdn.sqhk.co/xonafelog/ngjmhfR/electric_guitar_strings_12_gauge.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pavasokunise.epizy.com/87675760822.pdfIn PDF document text
    • https://s3.amazonaws.com/xupizewuxere/songs_2018_free_video.pdfIn PDF document text
    • http://novosumagib.epizy.com/77391762423.pdfIn PDF document text
    • http://vilasatexovoxe.epizy.com/worimala.pdfIn PDF document text
    • http://bedekopezedegej.rf.gd/rewivisulunanike.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/11502158456.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_off0000bef8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEF8 5428 bytes
SHA-256: 7382decd318cd493a4951dfd192cbdb3643cd687ff8f005d6d80cb2e286f14be
font_01_sfnt_off0000d15f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD15F 10328 bytes
SHA-256: dff56268c10b0d65af2f009604781a055ac2566898d612bd3166c0510e2e7bf7