Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cda1bac2bfab2dc…

MALICIOUS

PDF

69.7 KB Created: 2021-02-14 11:07:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 3380d4638d5583d4bc3092fefb05cc7a SHA-1: 893dde963ea01e7eb9866634152ed78d96d91ced SHA-256: 9cda1bac2bfab2dcd836cc8e15414236cf3cf9fcddada9fab4ba55ef46710646
194 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=gentron+pro2+10+000+watt+generator+parts In PDF document text
    • http://onlinetiser.website/chevy_stepside_truck_tool_box23a0y.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465907/normal_600ce320b37ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387052/normal_60100e0d84b83.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480588/normal_5fd293a55170f.pdfIn PDF document text
    • http://euroshopmn.space/jecha_beektotaa_addunyaaeznwg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385421/normal_6019976914265.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464082/normal_602609a86f203.pdfIn PDF document text
    • http://italia-doc.space/nezemelw25d5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369518/normal_5ff5b059d5a95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449399/normal_600be7f7cfb8c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492253/normal_5ffd1ed0dc1e5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405194/normal_6008ed5a84795.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370996/normal_5fc8fb502a604.pdfIn PDF document text
    • http://shopwithsale.website/a5_envelope_size_guidedchdj.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/bejeseja/17000339548.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_off0000c727.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC727 5404 bytes
SHA-256: ba28b924894e102616cbe4168c6e82208195dac7661d59bb13b8aae1d4c46005
font_01_sfnt_off0000d9b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9B2 14436 bytes
SHA-256: 4664aaa0c489d6db621cf8618058549834c2a986d84e65b00fa6a8e3524c4eaf