Malicious PDF — malware analysis report

Static analysis result for SHA-256 410d8f166c1c244b…

MALICIOUS

PDF

68.0 KB Created: 2021-02-15 07:36:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 25c19de24dab20c265e3e5a45f9c13bc SHA-1: 3e233ebaf902f4e6b3fc08df8f5f13128c720327 SHA-256: 410d8f166c1c244bb39a7c6c05ff3ee89ea9394ec71c0bddd1659cf450992320
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/wix?keyword=academy+360+chesterfield+va PDF link annotation
    • https://suxapenogabako.weebly.com/uploads/1/3/4/6/134602080/zememo.pdfIn PDF document text
    • https://pawonojureva.weebly.com/uploads/1/3/4/5/134522231/0aebd3aa7de.pdfIn PDF document text
    • https://cdn.sqhk.co/dakagugi/q5idijl/89325759395.pdfIn PDF document text
    • http://itslm.fun/39378084511dotxx.pdfIn PDF document text
    • http://1xbet-registrat.site/2168103217975ygv.pdfIn PDF document text
    • https://cdn.sqhk.co/supesuvepo/qieSYPj/rufizifinopugapado.pdfIn PDF document text
    • http://www-sfr-fr-monespace.com/wewupibofugupikrt5i.pdfIn PDF document text
    • https://cdn.sqhk.co/kawonidoza/hTwjb3f/army_application_briefing.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/rimepusox/carnivores_dinosaur_hunter_hd_apk_mod.pdfIn PDF document text
    • https://s3.amazonaws.com/xupovobejanam/botulil.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/17313570455.pdfIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/architectural_acoustics_illustrated.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/adler_individual_psychology.pdfIn PDF document text
    • https://s3.amazonaws.com/kujapomib/vufomolojegudivopik.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_off0000cbc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBC5 5872 bytes
SHA-256: 31e27f36f3ebbdb83c7978020d9d665ce658cd62cbcf684349f951d95fafa9a9
font_01_sfnt_off0000dfa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA3 10340 bytes
SHA-256: cec86b7e4f658441bef38c018b309606bddbff49ed63602150f95e8260b95c00