Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e26c92007822ee8…

MALICIOUS

PDF

73.7 KB Created: 2021-02-14 09:04:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 6edd00036d2866744bf1e48e0a028ab0 SHA-1: 5c10c355a20bb85009e22e829bedbbb9cbba95e4 SHA-256: 5e26c92007822ee81826363184e31beb93aef63e58c0a71a98182c711c2e6f63
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://druttle.ru/wb?keyword=genetic%20disorders%20in%20humans%20pdf PDF link annotation
    • https://cdn.sqhk.co/buganisazobu/dhbyPak/nisedukukikagipodur.pdfIn PDF document text
    • https://cdn.sqhk.co/limizolaxa/eijlKxv/63396944171.pdfIn PDF document text
    • https://cdn.sqhk.co/zulatobi/dxoreOv/mamedowowiti.pdfIn PDF document text
    • https://cdn.sqhk.co/vomikigiw/t9kjjja/royal_caribbean_international_cruise_planner.pdfIn PDF document text
    • https://cdn.sqhk.co/sovokeduseb/hqeaRhi/6990058226.pdfIn PDF document text
    • https://cdn.sqhk.co/rorezina/aPmjeu2/parent_plus_loan_rates.pdfIn PDF document text
    • https://cdn.sqhk.co/ditetona/bTgiggU/gas_prices_in_2008_california.pdfIn PDF document text
    • https://bitokulizawefe.weebly.com/uploads/1/3/4/6/134684274/pakozawedavu-rokim-xowonuwisofexoz-fasonopama.pdfIn PDF document text
    • https://cdn.sqhk.co/noluxokeruma/jaYWJYn/sulixenipukejavetowanege.pdfIn PDF document text
    • https://cdn.sqhk.co/nezuxada/VhjO4if/39961035150.pdfIn PDF document text
    • https://cdn.sqhk.co/javukapegami/dhi9hip/zepiwed.pdfIn PDF document text
    • http://masuxokovofa.66ghz.com/solving_polynomial_inequalities_worksheet_with_answers.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mafixatoje.epizy.com/51149193853.pdfIn PDF document text
    • http://rotaduwifomol.rf.gd/best_ebook_reader_app.pdfIn PDF document text
    • http://kifugelewepin.epizy.com/zawomufadigutul.pdfIn PDF document text
    • https://medlineplus.gov/genetics/condition/stac3-disorder/In 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_off0000e201.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE201 5392 bytes
SHA-256: 6de47257d0f53f337d32a5c5e6bf5ca55252cbab1b124334945d114237e8e2ee
font_01_sfnt_off0000f42d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF42D 11524 bytes
SHA-256: 414e08cea1b8c3a94369fd852d26bd7877eed0345c4e4f67825938b8809d0440