Malicious PDF — malware analysis report

Static analysis result for SHA-256 67137174d7483ee4…

MALICIOUS

PDF

71.4 KB Created: 2021-02-16 13:25:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 960b1fa63cc887a00755d01074725a26 SHA-1: 5fc1e4c9b9a075c3fab30d142bdfe5e7d5550e32 SHA-256: 67137174d7483ee4f197eca238786d48a5ed7bfc7613436f1794585d4613e153
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=good+buddies+symbiosis+worksheet+answer+key PDF link annotation
    • https://cdn.sqhk.co/tikisudolo/jdKeidU/cannonball_tv_show.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413719/normal_6017449ca91ea.pdfIn PDF document text
    • http://newonesitel.22web.org/xawapogorazazit.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461219/normal_5ff3f0349c480.pdfIn PDF document text
    • https://cdn.sqhk.co/gogojiranat/xhiifh9/29835862273.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/tulosa/muzamebonugujuzazogikij.pdfIn PDF document text
    • https://s3.amazonaws.com/kotenu/zusaver.pdfIn PDF document text
    • http://nalakakowim.epizy.com/silicone_rubber_sheet_uk.pdfIn PDF document text
    • http://kileduf.epizy.com/biomedical_engineering_degree_sheet_ou.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/44615282983.pdfIn PDF document text
    • http://gagoxapedako.epizy.com/mexeluwetonar.pdfIn PDF document text
    • http://vipowiso.epizy.com/zifevumemumobex.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/lorubogol.pdfIn PDF document text
    • http://wodefelid.rf.gd/32606565528.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_off0000da46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA46 5464 bytes
SHA-256: 43271587a2474941b76ff42562f759a7064a7d8151126216f89b9c12e958c60c
font_01_sfnt_off0000ecc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECC1 10540 bytes
SHA-256: cb3a59569e620bf664b4dc7b65f67212199dc4f3faa56677f7e9b033ba166291