Malicious PDF — malware analysis report

Static analysis result for SHA-256 82d637a47b4c7561…

MALICIOUS

PDF

67.5 KB Created: 2021-02-19 21:42:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 466499e3e09656ec47327af9945c962e SHA-1: 80a4d87123fa219e5276ebf6086b176e4ea7e5a6 SHA-256: 82d637a47b4c7561de74ce23b5ee36c282314f985c9c0476ae266b986f73a8cf
154 Risk Score

Malware Insights

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

This PDF file contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The embedded URL is designed to lead the user to potentially harmful content. The ML classifier and ClamAV detection strongly support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://crophysi.ru/123?utm_term=farmall+super+h+carb+adjustment In PDF document text
    • http://depofukug.iblogger.org/mizivovose.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465147/normal_5fd628f93a5b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370525/normal_5fea0bbc4048d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375352/normal_5ff3f583ee408.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502906/normal_5fc71504771c6.pdfIn PDF document text
    • http://kushtanash.ru/python2_command_not_foundh3eex.pdfIn PDF document text
    • http://sqrab.top/wonafado5rhk9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392452/normal_60220e7495264.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485012/normal_6014718934b39.pdfIn PDF document text
    • http://okrasote.info/wafuxojaju9hirn.pdfIn PDF document text
    • http://swiss-gear-top.xyz/95990175145fgvda.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/feliso/hioki_ir4056-_20_data_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tokudapele/wasogikurij.pdfIn PDF document text
    • https://s3.amazonaws.com/susonanezaj/jasper_reports_netbeans_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/mikibetiv/ios_13_public_beta_profile_free.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/antibody_engineering.pdfIn PDF document text
    • https://s3.amazonaws.com/kefodek/duolingo_android_version.pdfIn PDF document text
    • https://s3.amazonaws.com/lovomijelun/4612837588.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawe/69344804659.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_off0000c9ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9CA 5484 bytes
SHA-256: 07ee3b72e44196e3a53c3c40532c4cfed4266f9ac11117567c8237b45b1cf6cf
font_01_sfnt_off0000dc44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC44 10716 bytes
SHA-256: ca22ae23b2b4819546410902d95221cbb95a52c9c83fd04f4459adeba17e202d

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