Malicious PDF — malware analysis report

Static analysis result for SHA-256 fce8ab69d72ef69e…

MALICIOUS

PDF

75.8 KB Created: 2021-02-22 16:40:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: dc838c7fc29559fe65a69cf6b5140f5c SHA-1: b991e8187b8afc3c2c42acd4b7ea8b75866ee817 SHA-256: fce8ab69d72ef69e4db2da8cc91fa25db3bed02c9a4d63b442c3079d32fab1cc
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 0.9998

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://yafferge.ru/123?utm_term=are+evap+lines+blue In PDF document text
    • http://pevojatinolotej.22web.org/wajujedonixepafinop.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401711/normal_5ff4b5a00bf95.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419654/normal_60001e6c4333d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386837/normal_5fcf222014081.pdfIn PDF document text
    • http://devovonabukuzim.66ghz.com/find_inverse_of_matrix_worksheet.pdfIn PDF document text
    • http://euromarket.pro/the_octoroonwpvtk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408478/normal_5fe7a75a8fa59.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409796/normal_60020ff8dc3c9.pdfIn PDF document text
    • http://boomerangoo.site/voximigepomuwofuredimivq338.pdfIn PDF document text
    • http://telemprom.xyz/titivadupycv.pdfIn PDF document text
    • http://shop-you.xyz/vopoxust0sxy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384817/normal_6002529d83ee0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368218/normal_5fefe5a3a5289.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ramedivopa.epizy.com/change_to_jpg_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/xomepixo/pupigoxoxegomunopanes.pdfIn PDF document text
    • http://wotiputega.epizy.com/vibesa.pdfIn PDF document text
    • https://s3.amazonaws.com/rudelazifizuvo/juvobaboj.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_off0000e368.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE368 5000 bytes
SHA-256: 805d9f5c86f5738d7c5c7d30415f026337a19395a4a2624bb83d1d8bec84f03e
font_01_sfnt_off0000f470.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF470 1800 bytes
SHA-256: e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
font_02_sfnt_off0000fcfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCFE 10980 bytes
SHA-256: 65a67e1e2ce38c7a8922da983c57ab80e65e1579b0a9acfb6fe65f80e8dd1345

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