Malicious PDF — malware analysis report

Static analysis result for SHA-256 83d3c529734ff45e…

MALICIOUS

PDF

70.5 KB Created: 2021-02-06 22:04:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 7f2a86116a345e12e0401a374903a5e3 SHA-1: 31e77f23d309ac135391274f20fd2d2820f84e43 SHA-256: 83d3c529734ff45ec66ec8687ef6dec9032b739a9939ac93039730c1b38baa0e
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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://crophysi.ru/aws?utm_term=stock+market+trading+basics+pdf In PDF document text
    • https://vinixojaz.weebly.com/uploads/1/3/5/3/135312356/1172095.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426090/normal_5fcd7f29e9313.pdfIn PDF document text
    • http://ital-tess.space/zanelasazumcvia.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484623/normal_5ff866f5bc1a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469350/normal_5fd7fa094afc7.pdfIn PDF document text
    • http://sis-paypal.com/vonefopodiveo3j.pdfIn PDF document text
    • http://affilateapp.online/nukapiphoqyv.pdfIn PDF document text
    • https://xufalawat.weebly.com/uploads/1/3/0/8/130814535/e2934e.pdfIn PDF document text
    • https://cdn.sqhk.co/xiladuxe/jMjcjcm/39050748464.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418385/normal_5fd32d3c14308.pdfIn PDF document text
    • http://womotov.22web.org/10438001295.pdfIn PDF document text
    • http://vinnipoh.space/ben_and_holly_colouringngbrm.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kisolapuri.rf.gd/4431302301.pdfIn PDF document text
    • http://modedavap.epizy.com/duvutojexeb.pdfIn PDF document text
    • http://deweleve.epizy.com/ringtones_for_android_new_music.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_off0000d2a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2A0 5748 bytes
SHA-256: 1504f1c80bcd19f8611535ae77d5b04d66b8f205e870d0dd4d5230787d1d8a58
font_01_sfnt_off0000e61a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE61A 11656 bytes
SHA-256: e0ee35392356da0d84b4208578a2c95f47124c289508bb7c577fc1ce050df3fa