Malicious PDF — malware analysis report

Static analysis result for SHA-256 26e5ac7e14ca6bd6…

MALICIOUS

PDF

73.2 KB Created: 2021-02-22 03:42:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 1e54f49ee98883b6d6546e09866f3597 SHA-1: 2b3b66ddced2e902270baa0d41b443bc275cede4 SHA-256: 26e5ac7e14ca6bd626f5b9895f30413f1e555375b1a9fc52cbc5b5c892b15bff
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/strik?utm_term=icd+9+code+for+fatigue+leg In PDF document text
    • https://static.s123-cdn-static.com/uploads/4393628/normal_5fc89b5fbfec9.pdfIn PDF document text
    • https://zopamege.weebly.com/uploads/1/3/5/9/135966764/vomugose_xoxagadekunerov.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416327/normal_5fcf270a82b9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480148/normal_6029df02a2ef8.pdfIn PDF document text
    • http://iranianvc.com/nuzimblnzj.pdfIn PDF document text
    • https://kusavavatixe.weebly.com/uploads/1/3/4/8/134878613/gakekatelarij-tigalexajaro.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392191/normal_5fc7101fbdae0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385427/normal_6012c2b5a128f.pdfIn PDF document text
    • https://xevezuwojuko.weebly.com/uploads/1/3/0/7/130740392/wotepaserofulev.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465938/normal_5fe302763ab80.pdfIn PDF document text
    • http://ilkertr.shop/cognos_reporting_resume944sq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403817/normal_5ff3b795a84f2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fukanabe.epizy.com/what_is_cmyk_color_code.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/pofojodili.pdfIn PDF document text
    • http://wekiputozuda.epizy.com/violin_piano_sheet_music_classical.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e216.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE216 5104 bytes
SHA-256: 14d5ff402e51ba83d59cd1d33b8c674b5c076459fa338dda7dd1a2c8f49c8256
font_01_sfnt_off0000f387.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF387 11332 bytes
SHA-256: d4673fab8f769867934de7bfe6fd1e6320217fad87b5705d90d34982e27a6d96

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