Malicious PDF — malware analysis report

Static analysis result for SHA-256 18ad502009bcc431…

MALICIOUS

PDF

65.5 KB Created: 2021-02-11 14:31:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 1c8229bb5eff7cb873ac896c0c912a5a SHA-1: 22334ccf487a5d2c9ada7a115f95150b3cc21f61 SHA-256: 18ad502009bcc431e2fe039cd552c132e7f39e1dcd467dab9b55bdcdf8236b4f
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://jacksth.ru/wix?keyword=string+thong+cotton PDF link annotation
    • http://kisiguvawatabom.22web.org/42735944674.pdfIn PDF document text
    • http://interstart.online/72545845159t63rn.pdfIn PDF document text
    • http://unityfree.xyz/face_changer_camera_apk_downloadj6nfw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447086/normal_5fcd09c1ed617.pdfIn PDF document text
    • http://trackcreditscore.info/infiniti_qx30_review_consumer_reportsai6hs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393180/normal_5fd7c31a3e058.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369768/normal_5fd0785be2393.pdfIn PDF document text
    • http://itsnat.space/ejercicios_de_poleas_resueltos_3o_esed8gk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410002/normal_60048d486b930.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422918/normal_5ff5adfe70cf7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367275/normal_600e4a9384090.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376599/normal_6007f15044087.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489993/normal_5ffc8d920653c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rikirusekufipu.epizy.com/zelonirevokolaxufaroveru.pdfIn PDF document text
    • http://biwovake.rf.gd/nuduwonujopakubofo.pdfIn PDF document text
    • http://fuvogixerad.epizy.com/waterproof_disposable_draw_sheets.pdfIn PDF document text
    • http://vaguwiraji.rf.gd/pafasuranus.pdfIn PDF document text
    • http://gelerajar.epizy.com/wixugurovatisegelig.pdfIn PDF document text
    • http://vawutalakomu.epizy.com/delivery_order_template_malaysia.pdfIn PDF document text
    • http://zubixuguse.epizy.com/92501339401.pdfIn PDF document text
    • http://takugiwem.rf.gd/vuwusojofipu.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_off0000c3a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3A2 4744 bytes
SHA-256: db719a09c186fb5875c16f3c25ec322d648d52ce26437f75b040a06c2dd85304
font_01_sfnt_off0000d3ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3CA 10456 bytes
SHA-256: 06acbdf858f40d898c15ac7a10b49d7bfcaec46156eb7679bdbea9741e1e0557