Malicious PDF — malware analysis report

Static analysis result for SHA-256 e139a57364cc630f…

MALICIOUS

PDF

72.3 KB Created: 2021-02-13 22:11:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b7ef18fe26650b9b715c51433d262185 SHA-1: c007ac23ecbd608e93b3db272f836951a89c33c4 SHA-256: e139a57364cc630f201c56656684df404894ac43a27f23828ff1eebdec62518b
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=itunes+code+generator+reddit PDF link annotation
    • http://romeita.space/56862824189a2d0v.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407991/normal_601e2bbe89532.pdfIn PDF document text
    • https://cdn.sqhk.co/tejilunuf/VVfkjiF/62749113167.pdfIn PDF document text
    • http://itasda.online/caveat_application_format_in_marathi6na6o.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379230/normal_5ff917fd3566b.pdfIn PDF document text
    • https://cdn.sqhk.co/baxotonad/6YIifjj/simple_notepad_hidden_camera_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391605/normal_602817a457057.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495402/normal_5ff833bf675a9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452607/normal_5ff756c488de5.pdfIn PDF document text
    • http://justamorem.com/234286058989a6cr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467318/normal_601b34f1ce6a9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409806/normal_6007cb90b3e58.pdfIn PDF document text
    • https://cdn.sqhk.co/xubipoxeguza/aijNJhW/eikoh_child_care_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/votojuxosaf/ZaheBke/the_sandbox_craft_play_share.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dccf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCCF 5012 bytes
SHA-256: 7f294adf3194298a7ae45f5892283c4f806f95270ed4e2149b314b3b66d46a72
font_01_sfnt_off0000ede8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE8 11932 bytes
SHA-256: ff52107d7d9752badc0b30685229112dc8c14a08a23edd549468c6b9195c9e62