Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbe29142926ec6de…

MALICIOUS

PDF

79.3 KB Created: 2021-02-23 00:40:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 61ed42f54772098998efc547d56534f4 SHA-1: 2a365d6d047f8bb81cc489d8e4d07dfdbd53436a SHA-256: dbe29142926ec6de67e0bf4b31408fcf83d273f0eea075974c6072eb8ec1e932
252 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=what%20month%20do%20you%20harvest%20onions In PDF document text
    • https://milelujip.weebly.com/uploads/1/3/4/8/134861654/refenof_kemukorebone.pdfIn PDF document text
    • https://cdn.sqhk.co/kalusoxat/eghKgew/pilot_pen_g2_07_refill.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486346/normal_600891f2e5fd6.pdfIn PDF document text
    • https://cdn.sqhk.co/togokitaz/fifWSn0/32301032460.pdfIn PDF document text
    • https://cdn.sqhk.co/koxixoneto/hjifXjf/business_office_manager_requirements.pdfIn PDF document text
    • http://gosofejabe.iblogger.org/dadimatogezaxaw.pdfIn PDF document text
    • https://penebiji.weebly.com/uploads/1/3/5/3/135346042/juravuruxoxu.pdfIn PDF document text
    • http://putoseba.iblogger.org/what_is_credible_minimum_deterrence.pdfIn PDF document text
    • https://cdn.sqhk.co/wazikunal/EjfADij/javuromobeziwaxufin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474211/normal_601edc0737e78.pdfIn PDF document text
    • http://koteyarn.moscow/560462823lhpkj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://menivafanar.epizy.com/lufowiwajewarepofagavir.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/sumominowow.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/tujetofiput.pdfIn PDF document text
    • http://suvowafavij.epizy.com/attila_total_war_wre_guide.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_off0000f9a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9A1 5208 bytes
SHA-256: 9bd856627fed0b23b985b4381a9fbb53a9dd3802365a80a52cba1face826a6de
font_01_sfnt_off00010b3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B3F 10932 bytes
SHA-256: 5b1b362fbfe6575f0302190eccf752462f9a65919db4bfe26048565bcc5fc80a