Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9ceb310a3650b68…

MALICIOUS

PDF

78.3 KB Created: 2021-02-17 08:41:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ed598fb3e3313edfb0857356fbb590a7 SHA-1: 39f728e7afa4bbbfc518800620c534e39ba1691f SHA-256: b9ceb310a3650b68a9b8ff313d65628913c492c0e9b316b5e3b66b27a8d2cc7c
244 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/wb?keyword=rational%20fasting%20arnold%20ehret%20pdf In PDF document text
    • https://cdn.sqhk.co/jarixizotib/ohaiioc/32020720300.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461751/normal_600f775450197.pdfIn PDF document text
    • https://cdn.sqhk.co/gorokipo/hagdiix/82934751807.pdfIn PDF document text
    • https://kamararexunazo.weebly.com/uploads/1/3/1/4/131453861/dufupubalaluwaxeruzu.pdfIn PDF document text
    • https://dofemavuxowag.weebly.com/uploads/1/3/0/7/130739836/bazavazedelobav.pdfIn PDF document text
    • https://bilurowunolip.weebly.com/uploads/1/3/4/3/134316979/litowileri.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444646/normal_600caa8406efd.pdfIn PDF document text
    • https://mukoxawav.weebly.com/uploads/1/3/4/6/134627731/novatezas.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376103/normal_5fe2e6e5487d6.pdfIn PDF document text
    • https://cdn.sqhk.co/vasozaponem/hjgaZgi/speed_motors_llc_largo_fl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383680/normal_6022d539421fc.pdfIn PDF document text
    • https://lotatodekimin.weebly.com/uploads/1/3/4/7/134705716/sezuporur.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421360/normal_6001efe3dac1d.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/tobojelusiwi/48868395688.pdfIn PDF document text
    • https://s3.amazonaws.com/vovuzize/94847295053.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_off0000f68e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF68E 5308 bytes
SHA-256: 2177317f789db98c03f816544f98119450f2586680662bdbba4b545a78e62136
font_01_sfnt_off000108a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108A6 10428 bytes
SHA-256: 59da6178e108dc97f69f4b765ad2fb2efcbbb5631975939ab89ba46ec22cd486

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