Malicious PDF — malware analysis report

Static analysis result for SHA-256 19e0b78ff386085a…

MALICIOUS

PDF

71.9 KB Created: 2021-02-05 14:31:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 33d00392c6a5cac27d73ac23c9350b7f SHA-1: e2851a9e17f4a2ded40e377d3a27527c1c1951ef SHA-256: 19e0b78ff386085adfeadb9f686fa9ebb0578a521eeb45b8053d3570d4589a27
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://crophysi.ru/wb?keyword=contingent%20fee%20audit%20report In PDF document text
    • https://static.s123-cdn-static.com/uploads/4494877/normal_5ff081b985712.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420600/normal_5fe1595d45c95.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369775/normal_5fe3edcf96d08.pdfIn PDF document text
    • https://bozaxadoduzake.weebly.com/uploads/1/3/4/3/134306622/gefikenug_rudowib_sudadapefujiji.pdfIn PDF document text
    • https://muwalivom.weebly.com/uploads/1/3/2/6/132695892/gumurizo.pdfIn PDF document text
    • https://cdn.sqhk.co/mozopojugode/Kuhdd2w/bukefitixu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500895/normal_6002ed64cfbfe.pdfIn PDF document text
    • https://cdn.sqhk.co/zogameva/Djj5Oii/luvonalazeveg.pdfIn PDF document text
    • https://lukuxafibufogi.weebly.com/uploads/1/3/5/4/135400428/1184231.pdfIn PDF document text
    • https://cdn.sqhk.co/motuvitewodi/GifjiR4/tofolo.pdfIn PDF document text
    • https://cdn.sqhk.co/vexedobasof/2RbJjhL/50731978203.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448713/normal_5fdc20bb61911.pdfIn PDF document text
    • https://vexepediv.weebly.com/uploads/1/3/4/6/134668456/kepewozuwagelam-lafix.pdfIn PDF document text
    • https://cdn.sqhk.co/wimiwupo/iapDSic/dr._web_security_space_life_apkpure.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401505/normal_5fffd9068e498.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_off0000de34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE34 4904 bytes
SHA-256: 9b7008a6bd8ba939fd8059c0a9d97cc273b7291249a65802fe3c15d13962c76c
font_01_sfnt_off0000eef4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF4 10536 bytes
SHA-256: 431ca82cb855f922e0faca14d5428d7412f6df5ddde0d8faaaf67f7f6b2302f2

Open this report in the interactive analyzer, or submit your own file for analysis.