Malicious PDF — malware analysis report

Static analysis result for SHA-256 140da7135d6c03e3…

MALICIOUS

PDF

67.8 KB Created: 2021-02-19 21:35:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 78d0149faaac79d066dc270027158557 SHA-1: 18118c0c733e28bd1eb13c8b89904b62b74825f8 SHA-256: 140da7135d6c03e303c2bdb2d73b2be1bdada30cfdfbb2630846ae34b9f4cb0f
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://jacksth.ru/123?utm_term=how+to+set+clock+timer+on+boiler PDF link annotation
    • https://xepevuke.weebly.com/uploads/1/3/0/7/130775471/8a9383e2ecf22.pdfIn PDF document text
    • https://cdn.sqhk.co/kazakilen/igEhbii/52561159174.pdfIn PDF document text
    • http://chaptejvxz.fun/nordvpn_cracked_apk8wtx9.pdfIn PDF document text
    • http://vabodulesofife.22web.org/56980391089.pdfIn PDF document text
    • https://mopopapepiror.weebly.com/uploads/1/3/2/7/132741339/gexakamo_kivudi_tazalod.pdfIn PDF document text
    • http://proita.space/abnormal_psychology_17th_edition_freek4jiu.pdfIn PDF document text
    • http://netewe9.xyz/sosikamivosijesaxuvitf5xxf.pdfIn PDF document text
    • http://homiak.fun/16524489161u5g6m.pdfIn PDF document text
    • http://limons.space/final_fantasy_zodiac_age_license_guide0r2xx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377098/normal_5fc666849eddf.pdfIn PDF document text
    • https://cdn.sqhk.co/juvanejejuwo/ef1Cmgf/nuputififojofa.pdfIn PDF document text
    • https://cdn.sqhk.co/tibakekavero/4EHihia/road_traffic_map_live.pdfIn PDF document text
    • https://nuresoxak.weebly.com/uploads/1/3/1/3/131380504/2756432.pdfIn PDF document text
    • https://cdn.sqhk.co/manaruparil/h7iejbJ/non_catholic_godparents.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dozudaz.epizy.com/tutilikatoral.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_off0000ce7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE7F 4992 bytes
SHA-256: fdcda62c90a55750849bb47557690c735e0bca3afd675a32f2264b46e8ba0610
font_01_sfnt_off0000df77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF77 10212 bytes
SHA-256: 9c84c89ffe0b28c6f4296dbc7d7decde9bd2b0b9917ccec5cc78d13facf8aff1