Malicious PDF — malware analysis report

Static analysis result for SHA-256 65d1d31948309173…

MALICIOUS

PDF

72.3 KB Created: 2021-02-09 22:04:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 369ef6da576f09cd5b4004c2edf37881 SHA-1: 2b1aeb05113da9d0c74e291f1c419e87bb17b8e1 SHA-256: 65d1d31948309173f3e87a3523da751cba98c6cb1c6df0f858ec5dc1ffe96616
194 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
  • 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/aws?utm_term=bates+motel+season+4+episode+1 In PDF document text
    • https://cdn.sqhk.co/sazobenapur/fghYibz/jigusobigonovexuwozit.pdfIn PDF document text
    • https://cdn.sqhk.co/bodovukig/W7oqVjf/stickman_tennis_apk_uptodown.pdfIn PDF document text
    • http://mnclassis.org/scanner_radio_fire_and_police_scannerzycwd.pdfIn PDF document text
    • https://cdn.sqhk.co/vugomupuzisa/idMXzje/fowexegazifegiwirit.pdfIn PDF document text
    • http://legendbilisim.com/rilide2mgon.pdfIn PDF document text
    • https://cdn.sqhk.co/jiluputumusi/70N3FCT/80212832676.pdfIn PDF document text
    • http://repaircreditscore.info/ave_maria_hd_images_freesv1le.pdfIn PDF document text
    • http://ideal-it.fun/19931355557xhss9.pdfIn PDF document text
    • https://cdn.sqhk.co/rapawaferew/ajgThba/7790710498.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/tozaduliwubega/xunavurefawujawowonibaji.pdfIn PDF document text
    • https://s3.amazonaws.com/vabedafozo/america_s_best_racing_cheat_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/sowirutelevolur/85641446061.pdfIn PDF document text
    • http://kagurajujit.rf.gd/39718302535.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/makoriwezagonopadijisos.pdfIn PDF document text
    • http://bozudob.epizy.com/85463746164.pdfIn PDF document text
    • https://s3.amazonaws.com/wupixufekijax/luxasibof.pdfIn PDF document text
    • https://s3.amazonaws.com/gisujubolidine/51204588828.pdfIn PDF document text
    • https://s3.amazonaws.com/boxalewijim/vaxam.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_off0000dc98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC98 5200 bytes
SHA-256: cf739901c31fe12b02df20d728699ef232fa6dca3914cd42f0eba18d29399377
font_01_sfnt_off0000ee40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE40 11120 bytes
SHA-256: cbe3a6c174a2556c12c8c389f8df5e812c099e7fad61ca95293bdf739768c627