Malicious PDF — malware analysis report

Static analysis result for SHA-256 2abd677a956c8698…

MALICIOUS

PDF

71.5 KB Created: 2021-02-15 13:44:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c2703c2f4b457b54e3784e7d959d45b4 SHA-1: a11a2f45e68fa4246a8a01bbc732dcd3b5c37e44 SHA-256: 2abd677a956c8698371af0fb527dc5345e7a6071b0d7f8bf56580b7b5471e926
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://yafferge.ru/wix?keyword=total+war+rome+2+guide In PDF document text
    • https://rolobidixogiru.weebly.com/uploads/1/3/1/6/131637372/1cf85e3fbee8f.pdfIn PDF document text
    • https://litizabege.weebly.com/uploads/1/3/4/7/134713043/netawofa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366402/normal_5feb5d0e8430b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406466/normal_601cfcadce9cd.pdfIn PDF document text
    • https://nitafigiwulizo.weebly.com/uploads/1/3/1/4/131406945/8237159.pdfIn PDF document text
    • https://ranedesipa.weebly.com/uploads/1/3/1/3/131398497/febamuzosemoz_zedidazosevovul.pdfIn PDF document text
    • https://fexaxotira.weebly.com/uploads/1/3/5/4/135401388/xawojopetiw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367914/normal_5fee81af81b0f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369764/normal_5fdc4d4401036.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501233/normal_5fdf111d793d9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386609/normal_5fcdaea7d807d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446937/normal_600c390e0345d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379846/normal_60095db5f20ad.pdfIn PDF document text
    • https://xewidepomizexas.weebly.com/uploads/1/3/0/7/130775014/5509995.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477873/normal_6008a00573992.pdfIn PDF document text
    • https://lujuvikib.weebly.com/uploads/1/3/1/4/131406806/6de38634.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/purixifusipelid/brick_masonry_nptel.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_off0000dbb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBB1 5140 bytes
SHA-256: a4842b0416b076ca64a92b03d00f372ed2edbcf654fad1bdefae4a5756a8c166
font_01_sfnt_off0000ed28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED28 10524 bytes
SHA-256: 0bde80194c08bd553b78ba0d1d9c8fe86c397b20cb60115aded56ed1fbff272a