Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ed7a7a1544674a3…

MALICIOUS

PDF

71.4 KB Created: 2021-02-11 19:39:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 672438397b98c081939a9654df6d9dd0 SHA-1: 01552ecd630f50d4d6410a3dc97f34ba04c090f7 SHA-256: 8ed7a7a1544674a3729e637dd72db54f538ef6bed09554debc66ab0f95fdfacf
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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/wb?keyword=contacts%20from%20icloud%20to%20iphone%206 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4463788/normal_5ff03acc70e67.pdfIn PDF document text
    • https://cdn.sqhk.co/kaxonavi/hhegihf/jopet.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488806/normal_5ffb5bae73764.pdfIn PDF document text
    • http://zoo-taxi.site/risabovabinovikenikuzaxer9o3mv.pdfIn PDF document text
    • https://cdn.sqhk.co/gugivusofed/hjdiedM/ketuwuwon.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387408/normal_5fe06f7a5695b.pdfIn PDF document text
    • https://cdn.sqhk.co/dozirolizilu/gehcyyx/jumping_horse_racing_simulator_app.pdfIn PDF document text
    • http://alphabitx.com/behavioral_therapy_for_adhd1mqnu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481420/normal_5fecbc5f388f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412173/normal_600bf90231a1f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485927/normal_601252b4d9611.pdfIn PDF document text
    • https://cdn.sqhk.co/tifapoxur/icjgsih/65382248936.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404984/normal_5ff4659144fd4.pdfIn PDF document text
    • http://carbags.site/phool_bane_angaray_full_moviez6og9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479705/normal_5fe4b1de599ab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dac8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAC8 5456 bytes
SHA-256: c86c162a04f4bd05b5375a5cbfcd8ed5ef997f43e0feed703532fc48b8770689
font_01_sfnt_off0000ed20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED20 10492 bytes
SHA-256: a624fefc68e0067f03b364de5b7dc9e8604126bf4dad05a1702917870f38fa4b