Malicious PDF — malware analysis report

Static analysis result for SHA-256 59a9a5f97b607acc…

MALICIOUS

PDF

67.8 KB Created: 2021-02-20 07:50:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: fda2dcb620ac46e58b156ed2a2160abb SHA-1: 2bb0be1371132246acdef530a52e67eb7360026e SHA-256: 59a9a5f97b607acc1572f180311db850f1789db41c66476e4fc95453ce8f903f
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/wix?keyword=dot+plot+data+distribution+worksheets PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4465269/normal_6008c9b5ae1e2.pdfIn PDF document text
    • https://cdn.sqhk.co/kiburonoxib/hfjdIhd/99424417264.pdfIn PDF document text
    • https://cdn.sqhk.co/disarelas/d5hjjgo/police_siren_ringtones_for_lg.pdfIn PDF document text
    • https://cdn.sqhk.co/womibakok/2ipJajb/murder_mystery_party_ideas_for_tweens.pdfIn PDF document text
    • https://cdn.sqhk.co/juxerawabuf/hffGicz/vex_robotics_hexbug_spider.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/muvojugejoxip/ornamental_plants_identification.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/88454224520.pdfIn PDF document text
    • http://vetoraj.rf.gd/68487029103.pdfIn PDF document text
    • https://s3.amazonaws.com/fizufapu/81710567172.pdfIn PDF document text
    • https://s3.amazonaws.com/nagev/pifumunivat.pdfIn PDF document text
    • http://tudigefogoxawu.rf.gd/18753073471.pdfIn PDF document text
    • https://s3.amazonaws.com/tikofaketonub/bidevewedasusowerokiliza.pdfIn PDF document text
    • http://gevalej.epizy.com/36347122773.pdfIn PDF document text
    • https://s3.amazonaws.com/rovikibixu/adding_and_subtracting_integers_worksheet.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_off0000ccad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCAD 5344 bytes
SHA-256: ca0e24c1511c2f798880ac22b309d41868fc229415cc0d2767c48097378d2a75
font_01_sfnt_off0000deda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEDA 10368 bytes
SHA-256: fcf46b45d1f058e05f2db7029d58df2b5069a60fcfe2dd2e46ce1300f49fc42c