Malicious PDF — malware analysis report

Static analysis result for SHA-256 66da82201f06388b…

MALICIOUS

PDF

71.4 KB Created: 2021-02-24 22:26:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 80af412bce8ea3733668f7922bc96b14 SHA-1: 062f05883ce284e761c2a96c25420c268051e876 SHA-256: 66da82201f06388b0ddd4f4805fc3743db7abeb9cec05a11f07ad1bb8faf5680
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://maypoin.ru/wix?keyword=bottom-up+perceptual+processes PDF link annotation
    • http://dajexori.mypressonline.com/why_does_my_panasonic_phone_say_check_tel_line.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425484/normal_5fc71f989192c.pdfIn PDF document text
    • http://olymptrade.buzz/labut7726b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365552/normal_603164c9a4b28.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464522/normal_5fcdedb9508d0.pdfIn PDF document text
    • http://rejemezurufoveg.mywebcommunity.org/information_technology_degree_online_reddit.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390052/normal_5ff9f1e88a980.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/waduzirader/lonely_planet_russia_free.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/sifejojumodusib.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/60797688302.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwotarotavuz/99420364105.pdfIn PDF document text
    • https://s3.amazonaws.com/fonibinaraj/du_bsc_chemistry_syllabus.pdfIn PDF document text
    • https://s3.amazonaws.com/tamobalasu/kisitijupapetomigov.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/80546049894.pdfIn PDF document text
    • https://s3.amazonaws.com/tikoweravisixu/buxeriwuwuzif.pdfIn PDF document text
    • https://s3.amazonaws.com/nakevoja/2007_aha_guidelines_prevention_of_infective_endocarditis.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_off0000dc5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC5A 5160 bytes
SHA-256: e6f0768984c5dcc8c0b7db1bc96fb6096eaef054d99da695fc771b80929f4595
font_01_sfnt_off0000edcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDCF 10328 bytes
SHA-256: 3ea1345a972073fad743e83e0c652bd5835a875aaf8daf79c54451e8d38a6663