Malicious PDF — malware analysis report

Static analysis result for SHA-256 93a5265ccaa6f215…

MALICIOUS

PDF

71.7 KB Created: 2021-02-19 01:48:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 9e560aee1ebc473aa6f1120bf53ed7ae SHA-1: a302dda96710258c3751ab3c0fd188313a5d3a25 SHA-256: 93a5265ccaa6f215729ee113409e3c04829a55f65bd86530d33abd9ab2ada745
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to trick users into visiting a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=how+to+clean+vacuum+attachments In PDF document text
    • http://familyit.info/superdry_ladies_jacket_size_guidep3dwx.pdfIn PDF document text
    • https://cdn.sqhk.co/rotuzuwibi/4sjgShh/1977497988.pdfIn PDF document text
    • http://winoraama.fun/bible_verses_in_order_new_testament6kn82.pdfIn PDF document text
    • http://proba7.xyz/xoponinelonelozuku57adm.pdfIn PDF document text
    • https://cdn.sqhk.co/jategumeb/CwrIcgc/4278908845.pdfIn PDF document text
    • http://fastcreditcheck.info/xugikebudusaboreo2hm4.pdfIn PDF document text
    • http://idclick.cash/72863167256dqdji.pdfIn PDF document text
    • http://hookup756.fun/alphabet_letters_to_print_and_cut_outdua6g.pdfIn PDF document text
    • http://vas-rem.ru/cima_e3_study_text_strategic_managementw7y86.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/zuwosil/atualizao_moto_z2_play_android_9_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/mufirifuwovudape.pdfIn PDF document text
    • https://s3.amazonaws.com/bisapovepizaj/mojepeworixazenelajamasub.pdfIn PDF document text
    • https://s3.amazonaws.com/juzewojavomofew/barriers_to_entrepreneurship.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_off0000dce3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCE3 5056 bytes
SHA-256: 1fc5dce99abdd1f1318a6e0120afa62dffe26b8fcd7bed8b06db89e9513e7d3a
font_01_sfnt_off0000ee09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE09 10848 bytes
SHA-256: 191766831c1ca2770ba92a6e68b3ff4647ac8106a32def9452582c1791c37b2b