Malicious PDF — malware analysis report

Static analysis result for SHA-256 b448186d2852e864…

MALICIOUS

PDF

72.9 KB Created: 2021-02-26 22:43:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: e69d5184a451a196ee4870be18d36e7d SHA-1: f1e308d933bd6b4658d5bd0b769d65dd2e6bf8f0 SHA-256: b448186d2852e864aa629b3266db0cbc2a120bd83a8e174b196a28e1ffb67194
196 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
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://pelibifir.ru/award?keyword=how+to+program+samsung+tv+remote+bn59 PDF link annotation
    • http://davupopebuwiser.sportsontheweb.net/sp-06604_aci_detailing_manual-2004.pdfIn PDF document text
    • https://pomisefinare.weebly.com/uploads/1/3/4/9/134902228/6690309.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480414/normal_5fe2770ac647d.pdfIn PDF document text
    • https://galofufe.weebly.com/uploads/1/3/1/3/131384583/xebopugelizedir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414331/normal_5fe6bbc8b88c2.pdfIn PDF document text
    • https://vefapabawi.weebly.com/uploads/1/3/0/7/130740427/navutojedepomir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448743/normal_601d7b5cdcf2e.pdfIn PDF document text
    • https://muwunijika.weebly.com/uploads/1/3/1/3/131398004/pofoxijex.pdfIn PDF document text
    • http://vvinorama.fun/browning_a5_serial_number_starts_with_xf8s17.pdfIn PDF document text
    • https://tisalupiruj.weebly.com/uploads/1/3/4/0/134018152/xulug_tusokamuxuma.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/juliziwojatige/how_to_setup_ge_4_universal_remote.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/double_bed_sheet_sizes.pdfIn PDF document text
    • http://josekopiguvalup.epizy.com/67166441177.pdfIn PDF document text
    • https://s3.amazonaws.com/dudujopixejikug/ludomazemumogobekiroja.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/xogunoboxufudavoge.pdfIn PDF document text
    • http://pusapovewazigu.onlinewebshop.net/ios_13_security_white_paper.pdfIn PDF document text
    • http://magegefopo.atwebpages.com/54954200504.pdfIn PDF document text
    • http://salulasalanegox.rf.gd/usability_heuristic_evaluation_report.pdfIn PDF document text
    • https://s3.amazonaws.com/sepovutapakogaf/tusepujelipupule.pdfIn PDF document text
    • http://xoviketi.epizy.com/77148493932.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_off0000e13b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE13B 5640 bytes
SHA-256: 63c688923d225514de9ad3a0d73cfe4b1d4da758e0d6a6751801f42507035f26
font_01_sfnt_off0000f466.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF466 9936 bytes
SHA-256: 6242bd72a5a107cb6de19ea9b910c34ce3b5c8d87b37324c4aff7e5ef196fd1c