Malicious PDF — malware analysis report

Static analysis result for SHA-256 643d2188d3871380…

MALICIOUS

PDF

71.8 KB Created: 2021-02-16 03:59:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 84015ab2b6647c22cfd5b6a92541c48e SHA-1: 820ae057892a937079efed16c2b1bc560b09e1b8 SHA-256: 643d2188d3871380ff152cc8e3c4e37e7be233b801f1d7904f171a7ef0db1933
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://druttle.ru/123?utm_term=como+nao+ter+mais+cravos+no+nariz PDF link annotation
    • http://white-x.fun/56279578389cxnn0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487192/normal_5fe81f6899e43.pdfIn PDF document text
    • http://wokelegekak.66ghz.com/greensleeves_clarinet_sheet_music.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487902/normal_5ff500c60df49.pdfIn PDF document text
    • http://tricitysikhs.com/live_stream_tv_free_trial7q49m.pdfIn PDF document text
    • https://tutitobogin.weebly.com/uploads/1/3/4/4/134485970/rasodinoxu_mubuzofes.pdfIn PDF document text
    • http://zelopaqq.xyz/vakedenujadilcly7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381740/normal_5ff8d52b7802a.pdfIn PDF document text
    • https://duzetokip.weebly.com/uploads/1/3/4/4/134404829/komunulegilapavuj.pdfIn PDF document text
    • http://sushibara.net/balloon_tamil_film_songs_freeppwj3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476418/normal_5ff692646c62b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385230/normal_6003ec9dada36.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408588/normal_5fd9175c84986.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wosaxadef.rf.gd/87852980400.pdfIn PDF document text
    • http://vamivesuger.epizy.com/eye_cloud_camera.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_off0000d8cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8CD 4928 bytes
SHA-256: a6324f537c04d3a03ff77ce7cd6be6cbb0b18b0c8efb8cabc0664911615dda27
font_01_sfnt_off0000e980.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE980 12860 bytes
SHA-256: 3e946404c2986721fec7a9188b7f8824386ed9cddafb0578d5da934a149652fd