Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a786e1bedc574d8…

MALICIOUS

PDF

74.1 KB Created: 2021-02-06 17:03:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1aa0ca16302adfa5f337d57a71b4c400 SHA-1: a7e5fc0166fa887b48b123053a5bb2002a7da60a SHA-256: 8a786e1bedc574d8fba53ddd614762ed42207a0a3bee469d0bb47dbd22ce2036
176 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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://maypoin.ru/aws?utm_term=google+sheets+merge+cells+greyed+out PDF link annotation
    • http://tophomework.space/179397104214na04.pdfIn PDF document text
    • https://cdn.sqhk.co/peferitukofa/Eghhbha/ahl_hockey_teams_map.pdfIn PDF document text
    • http://freehookup.xyz/76993959553ug155.pdfIn PDF document text
    • http://japadalifu.22web.org/convert_to_excel_one_sheet.pdfIn PDF document text
    • https://cdn.sqhk.co/jeporikate/aiiAgif/galaxian_nes_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/lexujowina/fWhbRxw/63106392030.pdfIn PDF document text
    • https://cdn.sqhk.co/kipaselofuza/cgcnghD/walmart_steam_gift_card_not_working.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dotejoxeguni.epizy.com/27861139729.pdfIn PDF document text
    • https://s3.amazonaws.com/vexosafugunu/oxidation_of_ethylbenzene.pdfIn PDF document text
    • https://s3.amazonaws.com/xiwevitox/15780052496.pdfIn PDF document text
    • http://gijabakupukuj.rf.gd/7191795105.pdfIn PDF document text
    • http://rumajajoneder.rf.gd/cameroon_information_facts.pdfIn PDF document text
    • https://s3.amazonaws.com/guwutivupudutu/beautiful_day_u2_chords.pdfIn PDF document text
    • http://tedijafubivot.epizy.com/melezekodewidov.pdfIn PDF document text
    • https://s3.amazonaws.com/lemefofutomapox/cd_and_dvd_full_form_in_computer.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_off0000e6c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C9 5276 bytes
SHA-256: 055d8b1c50528217b4df5bbf9153080483dde146c246401b0132afc33b31e17f
font_01_sfnt_off0000f8a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8A2 10212 bytes
SHA-256: 80859b59c9d3ad531b7f406b5e84d98f5e9143ae51bdb7df5047034595883ad9