Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebc667c07bf42ea4…

MALICIOUS

PDF

61.2 KB Created: 2021-01-29 00:09:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 74b10cce4da5eb716a945c7648f5d66b SHA-1: 1a85f414c0f480dbfb2fe47aeb3f106de51c4b86 SHA-256: ebc667c07bf42ea48b9d623de0d6178ec3391310f068e4df95a2cd52776470d6
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=stylish%20text%20fonts PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4473616/normal_5fe570a28f141.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383566/normal_5fce12003cb72.pdfIn PDF document text
    • http://afracheat6.xyz/necromancer_names_diabloobd58.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413110/normal_5fcc571936105.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369318/normal_5ff84491c6218.pdfIn PDF document text
    • https://cdn.sqhk.co/bigulikexupa/ziiw7ig/tyre_repairs_near_me_open_now.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464070/normal_600ded2d2ec1d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366036/normal_5fe7c19d45042.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404984/normal_5fc6be0f5af40.pdfIn PDF document text
    • http://spencermcman.us/tutu_app_2019_ios0etm5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376105/normal_5ffc61b4d160a.pdfIn PDF document text
    • http://devlp.design/39873824863kpb3t.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452372/normal_600d8c43ef943.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kobizesamow.rf.gd/tvs_bolt_torque_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/33184334935.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_off0000b638.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB638 4824 bytes
SHA-256: a2e2c3bf294c5d40683829d0cffeb8868a8ab30ee850fe8848844420438a4b97
font_01_sfnt_off0000c6af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6AF 9832 bytes
SHA-256: c33700367ac45354397588bdf77ea778c2da47059cbe4f142b8f2f0127b313b8