Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8ceeb10c53a1bcc…

MALICIOUS

PDF

73.0 KB Created: 2021-02-16 04:51:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: d2b33ba6351da944103815803fff7c38 SHA-1: 4536d6b40167344d94e10c4ad78e4b04943f34d9 SHA-256: a8ceeb10c53a1bcce6f990fb357df88c51602e7f0da8b428fb83cc6a91a38754
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://druttle.ru/strik?utm_term=tracfone+lg+journey+specs PDF link annotation
    • https://nadazilagola.weebly.com/uploads/1/3/4/3/134314388/3535656.pdfIn PDF document text
    • http://scarcebook.com/alstonia_macrophyllae6arm.pdfIn PDF document text
    • http://geosen.net/telecharger_dsm_5_gratuitdqc1f.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/tibanepoxilibud/vewujabif.pdfIn PDF document text
    • http://dozonexupiwef.epizy.com/58898490393.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/26049375930.pdfIn PDF document text
    • https://s3.amazonaws.com/genukopapovixo/24562295884.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/28945011951.pdfIn PDF document text
    • https://s3.amazonaws.com/kudefem/canadian_visa_lottery_online_form.pdfIn PDF document text
    • https://s3.amazonaws.com/metakibeme/84871449773.pdfIn PDF document text
    • http://rogofijanititad.epizy.com/59660783893.pdfIn PDF document text
    • https://s3.amazonaws.com/fajonubinomeder/majaseno.pdfIn PDF document text
    • https://s3.amazonaws.com/nopomewegobij/57639644006.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/zaxunigewuzezarisimakobo.pdfIn PDF document text
    • https://s3.amazonaws.com/libeganot/chest_guidelines_pe_anticoagulation.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_off0000e022.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE022 5312 bytes
SHA-256: f1a5f51aac8ad9f0d93c641f80358ccb935625c318445ada281210847610a663
font_01_sfnt_off0000f253.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF253 10876 bytes
SHA-256: cc77de85e70c50b619715ca215809020a10213257bf242f9069ef4ce9e681877