Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcd813e6df00de28…

MALICIOUS

PDF

78.6 KB Created: 2021-02-24 01:53:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 416f6d850fa52830f79ba493b47413c4 SHA-1: 3ec2b0d5df6f51dc1a0c3241237eecc3d79fd46b SHA-256: bcd813e6df00de28232234ff4c6f1a0005fda569a6397bd5f6f3d00431269ed9
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://jottigo.ru/123?utm_term=how+to+explain+climate+change+to+a+6+year+old PDF link annotation
    • https://sazojowob.weebly.com/uploads/1/3/4/3/134351878/17c96d562ab5b.pdfIn PDF document text
    • https://wisiwojapano.weebly.com/uploads/1/3/4/8/134896472/2083907.pdfIn PDF document text
    • http://xitigedomure.66ghz.com/bokofuwujorawuxibawelu.pdfIn PDF document text
    • http://tunizunifegitof.66ghz.com/xezixodinusad.pdfIn PDF document text
    • http://tekeriset.iblogger.org/guide_to_black_sabbath_iron_man.pdfIn PDF document text
    • http://bedebatosisazov.22web.org/kentucky_drivers_test_answers.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://pogotoxevug.epizy.com/xatexadegeditebigubeba.pdfIn PDF document text
    • http://xiwularofevomu.epizy.com/7073108026.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/nadibavifotidorufezo.pdfIn PDF document text
    • http://fexewagesulel.epizy.com/hotstar_app_apkmonk.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/bowaz.pdfIn PDF document text
    • https://s3.amazonaws.com/tozaduliwubega/55167695246.pdfIn PDF document text
    • http://paruwegugu.rf.gd/pulenibadapame.pdfIn PDF document text
    • https://s3.amazonaws.com/jubiferekaka/spotify_increase_limit.pdfIn PDF document text
    • http://kesajebofiruzu.epizy.com/libertango_sheet_music_brass_band.pdfIn PDF document text
    • https://s3.amazonaws.com/bubisifapagefe/audacity_free_for_windows_8.pdfIn PDF document text
    • http://gifexepes.rf.gd/government_of_canada_passport_renewal_application_form.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7C5 5472 bytes
SHA-256: 9bfd0ff181f875bf2006c15c97975526f34ddad1ef79dd8241acb09417cacaf6
font_01_sfnt_off0000fa40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA40 10552 bytes
SHA-256: b3234508cf345b2dca2e55cd6818a43ab0e1a3fd2e05f87852b120a3c40fafed
font_02_sfnt_off00011e5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E5D 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

Open this report in the interactive analyzer, or submit your own file for analysis.