Malicious PDF — malware analysis report

Static analysis result for SHA-256 5594fea3a839fda3…

MALICIOUS

PDF

61.9 KB Created: 2020-12-06 09:36:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: f1d77b03fa5e58e80c588a93d200be7c SHA-1: 1f62fb7c099eb6a27a340c96350a643ab057c840 SHA-256: 5594fea3a839fda3de1b92d1599c15bbb649880b46ffafbf24837cd458aed06c
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 0.9996

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://traffmen.ru/aws?utm_term=a+catholic+guide+to+the+bible+workbook In PDF document text
    • https://cdn-cms.f-static.net/uploads/4383805/normal_5fafdb1757761.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384159/normal_5f8eb83dafff8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf685a61e25426e1310012/1606379611281/89346936253.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b325fd12-1f1a-4249-81f5-3f4adff54736/love_is_a_dog_from_hell.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d54415c-0229-4fa9-873e-2ad33c148564/wosufewupidige.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/queen_bed_platform_conversion_set.pdfIn PDF document text
    • https://s3.amazonaws.com/mozedijiz/75770808174.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3086c68d-2444-4f08-9f7f-baaa4c3eecae/because_of_romek_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c373a6e-96d4-457f-8783-ecaa5d7b4ec0/ruzuxadulodiluvifekaloral.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7ae6eb2e29c7ba9958c77/t/5fcc46c17ae85b53b285d33c/1607222977416/jixuzowefum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1aaa3ee6-b49d-4b95-a099-87c53b7c9458/vojewomubak.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4b50f8cdb769c6d8ed0a/1606372180568/66279985876.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db0d8d75-b855-4575-8178-1120491e5ec6/pick_image_from_gallery_android_example.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_off0000b546.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB546 5308 bytes
SHA-256: 07ea5ecdc1b1876bf8e9fbf3d69e56b930563d2426edd73a4b18043d731c86cd
font_01_sfnt_off0000c75c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC75C 10372 bytes
SHA-256: b564f1903e727b1069393a1a2b257d79dda8bad61f90f04e3eaff885f57f39be

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