Malicious PDF — malware analysis report

Static analysis result for SHA-256 6de1fe679369ec86…

MALICIOUS

PDF

71.7 KB Created: 2021-02-20 19:47:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 4f8cb1123b8dfb1501ee1f9c5195f6dd SHA-1: 0b9bc2f1a436eaa223cbfb66153dd4b9118ee783 SHA-256: 6de1fe679369ec869f49672f5b582c45dfe24abb494b03c5a1fbd226f33c77d7
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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=whirlpool+gold+refrigerator+manual PDF link annotation
    • http://devgame.design/122569887975ivpl.pdfIn PDF document text
    • https://cdn.sqhk.co/savaketiju/qmieigX/55234616890.pdfIn PDF document text
    • https://cdn.sqhk.co/zezoxomop/gifijZ0/zinelenavagudawekatus.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385014/normal_5fee77841c1b8.pdfIn PDF document text
    • https://cdn.sqhk.co/gofelaxes/wjigj55/speed_racing_near_me.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382966/normal_5fcf6c3ce0768.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469126/normal_5fd67e9b156f1.pdfIn PDF document text
    • https://cdn.sqhk.co/janawezexoj/KTFMgc2/lorawovoxafirusi.pdfIn PDF document text
    • http://buylettersonline.com/fewemigesuftrqv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502464/normal_601bb21961292.pdfIn PDF document text
    • http://creditreportus.info/ionic_charge_chartbenwt.pdfIn PDF document text
    • https://cdn.sqhk.co/dezorevukor/icgNjbK/spinal_tap_quotes.pdfIn PDF document text
    • https://cdn.sqhk.co/sopiloroda/cgimHhe/7900125186.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/titugome/angular_4_ng-_template_let.pdfIn PDF document text
    • https://s3.amazonaws.com/julexekubaj/rawenepiwemezuze.pdfIn PDF document text
    • https://s3.amazonaws.com/jifedefujodu/fipuxoxop.pdfIn PDF document text
    • https://s3.amazonaws.com/libowebujakux/pazesijito.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_off0000db77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB77 5288 bytes
SHA-256: da03b817d3e36c5034799948e5114cd2b5bc32b1062df19590457bde0bbb9320
font_01_sfnt_off0000ed5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED5F 10684 bytes
SHA-256: b99e8a5b8e267e4b7386b0b9315a2980b9978c9acbe1a6abc02752377e74694c