Malicious PDF — malware analysis report

Static analysis result for SHA-256 690a201aea6c1675…

MALICIOUS

PDF

84.0 KB Created: 2021-02-22 20:45:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7ee29b70e6bc157711c8f320a90c60ee SHA-1: b62fc43b62450f0edc82d0e675a35413f1bb8cd0 SHA-256: 690a201aea6c16754374e0e5ff9ee272299a650777263b448bb158cdb1180af9
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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=dragon+ball+z+devolution+super+unblocked In PDF document text
    • http://mangalvpodarok.ru/gurapetezuxuxexejevulexaqcfjh.pdfIn PDF document text
    • https://kawikixefi.weebly.com/uploads/1/3/5/3/135388441/refuziveli-sofulugunilu-xemaj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452193/normal_5fd910e4d1c9a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365619/normal_5fee16e5936ea.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401703/normal_5fe4f82242b18.pdfIn PDF document text
    • http://art-practice.org/does_el_pollo_loco_have_vegetarian_optionscc9gl.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372985/normal_5ffbe01b154fb.pdfIn PDF document text
    • https://boxatikavizag.weebly.com/uploads/1/3/4/6/134680825/baee3f49f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471256/normal_60229f5d31e48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454561/normal_6012b717e6fed.pdfIn PDF document text
    • http://pixelbarista.com/zemonogamobare310mw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455207/normal_60029a052cec0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476445/normal_600e5deacc870.pdfIn PDF document text
    • https://cdn.sqhk.co/fugolamudara/iagcgcC/download_solid_color_wallpaper_pro.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455881/normal_5ffc66fb69757.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_off00010825.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10825 5556 bytes
SHA-256: 66230a957c6e21887ac01635a4f22142c7a4eeadf28e8c4a4cfac44e4b8f24ac
font_01_sfnt_off00011b25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B25 13048 bytes
SHA-256: 57ecf1f2cace230efe2f163a5ddd8f34737f70791e0aaa8d806c8abc498ee157