Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1a5ede071902e57…

MALICIOUS

PDF

69.4 KB Created: 2020-12-19 05:44:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: c2173f5deb0a76970f19d0d43b038d9c SHA-1: 953e81ca69a23fd71f12f58d6d43ffb2a5c7fbc1 SHA-256: f1a5ede071902e57cdcf61a7f00adbcd8f5c5ff6bdbcb6ce7bf107fdf4cda948
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffmen.ru/123?utm_term=redwoods+in+portland+oregon In PDF document text
    • https://sukuwakutas.weebly.com/uploads/1/3/4/6/134603616/damubo.pdfIn PDF document text
    • https://kuxijixa.weebly.com/uploads/1/3/4/8/134856984/dowizu.pdfIn PDF document text
    • https://mofesifejizovis.weebly.com/uploads/1/3/4/7/134749503/mufab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475219/normal_5fad6dd7df110.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368991/normal_5f97146dcdbad.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
    • https://s3.amazonaws.com/mipeboro/tugukesu.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/mefapulixow.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/rental_agreement_form_in_spanish.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1728f86c-3598-4658-a4a5-9dc004a9ed39/pool_pump_parts_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b425b98-d44b-4478-aab6-7712c505453b/intermatic_ei600lac_-_digital_in-wall_timer_switch_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xujitezu/football_betting_strategies.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_off0000c702.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC702 5016 bytes
SHA-256: aa4f3dbb481d6c8e4a7282c07414cee28a715f1e3dae7f90a40d323884892b9b
font_01_sfnt_off0000d82a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD82A 10236 bytes
SHA-256: d285ea9222eeee7503dd2fd7110074de0e4e1612e05eb96e989c38223b335d74
font_02_sfnt_off0000fb3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB3E 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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