Malicious PDF — malware analysis report

Static analysis result for SHA-256 60875ca2ed2dec31…

MALICIOUS

PDF

87.7 KB Created: 2021-03-22 13:09:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: d5b114107eab2d1576270708427bde60 SHA-1: cdf35a8b2631d97c2cb01aee1a333dc2c12701a2 SHA-256: 60875ca2ed2dec312bbd3fdf137885e9cd11c1384e8c95e97c9d19d73f371bae
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://zajinet.ru/wix?keyword=ethnic+minorities+in+ww1', which is likely a lure to a phishing or malware distribution site. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious external resource, consistent with spearphishing tactics.

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://zajinet.ru/wix?keyword=ethnic+minorities+in+ww1 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4492575/normal_6034ea70bc95e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384632/normal_600e3eb280318.pdfIn PDF document text
    • http://dkblogin-de.best/power_washer_rental_cost_home_depot13ucw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387427/normal_600826e0c7f6b.pdfIn PDF document text
    • http://winoorama.website/how_to_get_advanced_excel_skills8zaxd.pdfIn PDF document text
    • https://cdn.sqhk.co/bamazaludez/OrijUif/ridoronetejawevobe.pdfIn PDF document text
    • http://geguxejap.22web.org/data_structures_and_algorithms_course_objectives.pdfIn PDF document text
    • https://cdn.sqhk.co/kiviziko/okHljSt/deool_band_movie_song_ringtone.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475194/normal_5fe1958084a03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372719/normal_602ed7d510cf2.pdfIn PDF document text
    • https://cdn.sqhk.co/kamozipu/hdvnUkr/23310695567.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462037/normal_5ffa204da16d6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405945/normal_6006cf1fe2a45.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491445/normal_5fc56e34d1606.pdfIn PDF document text
    • http://contact-git.top/544302128090816k.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384160/normal_6006733519ddc.pdfIn PDF document text
    • http://bluebadgeapproval.com/srikakulam_burrakatha_songs9x4ip.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/metakibeme/kimovapu.pdfIn PDF document text
    • https://s3.amazonaws.com/vawoginele/pdf_to_word_mac_automator.pdfIn PDF document text
    • https://s3.amazonaws.com/wefemabeni/xurosi.pdfIn PDF document text
    • https://s3.amazonaws.com/sitozi/22168864820.pdfIn PDF document text
    • http://juwesuzibu.epizy.com/numelupitorobeteremexogus.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_off00011ca0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CA0 4896 bytes
SHA-256: ff8b53e7be9061456056f4a1ed54498b7bc68f2d87130bb606ed14a7a7cd8ee2
font_01_sfnt_off00012d3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D3A 10756 bytes
SHA-256: 010f564fd4b26cfeed964c53b8650c582267c6fedfeb425fc4789d563959f4e3

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