Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f01e79f9a7afe0c…

MALICIOUS

PDF

73.8 KB Created: 2021-02-23 05:42:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 50f69b494581351d78dddf8f1776a617 SHA-1: 3e1ba89bc9f005660069c33433acc5a44f045ca4 SHA-256: 2f01e79f9a7afe0c35b23e66e7e305f94976bb3ab1ad4d22ccbe376fa3044c5e
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://seumenha.ru/123?utm_term=business+analyst+certificate+program+online PDF link annotation
    • https://lebotisoko.weebly.com/uploads/1/3/4/5/134597635/1020354.pdfIn PDF document text
    • https://gisodotok.weebly.com/uploads/1/3/5/9/135971357/wekowokuse.pdfIn PDF document text
    • http://feyakast.online/p55nf06_mosfet_datasheetq33mk.pdfIn PDF document text
    • https://mibinataxufix.weebly.com/uploads/1/3/1/4/131438539/rebumuxike_vafuv.pdfIn PDF document text
    • https://tebiwexarug.weebly.com/uploads/1/3/1/3/131380746/2171363.pdfIn PDF document text
    • https://gisipunav.weebly.com/uploads/1/3/1/6/131636927/0e85a57a.pdfIn PDF document text
    • https://vevikonupefafo.weebly.com/uploads/1/3/5/3/135391347/wofome_wotapef.pdfIn PDF document text
    • https://babaperivagam.weebly.com/uploads/1/3/1/3/131379833/120242.pdfIn PDF document text
    • https://rofosuvobatijam.weebly.com/uploads/1/3/4/6/134661532/f0144606.pdfIn PDF document text
    • http://trokot-roznica.xyz/vidikovanoxugevabyn6mk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443610/normal_602d4c26b6bb4.pdfIn PDF document text
    • https://gekibevuzoz.weebly.com/uploads/1/3/4/5/134503907/9a7df.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/meludav/34803964711.pdfIn PDF document text
    • https://s3.amazonaws.com/desekusoxi/calibre_convertir_formato_kindle.pdfIn PDF document text
    • https://s3.amazonaws.com/xeropizuwe/engineering_materials_and_processes_desk_reference.pdfIn PDF document text
    • https://s3.amazonaws.com/fukepez/kendo_grid_row_template_angularjs.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/38537354451.pdfIn PDF document text
    • https://s3.amazonaws.com/jumedemimo/kebasizemakopurupemedobew.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_off0000e35d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE35D 5488 bytes
SHA-256: 4421e9c2538f98d57523cc7a6d3b4b8879865f2e619a752e6526a88676e8eb3c
font_01_sfnt_off0000f604.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF604 10508 bytes
SHA-256: f9a9863a3b4ad660052b610f71c6ef9272f829d0054f4acb165f85568e84c11d