Malicious PDF — malware analysis report

Static analysis result for SHA-256 329647382b9a084e…

MALICIOUS

PDF

157.0 KB Created: 2020-12-29 15:12:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 9c7b75d5adc73cc2bc11da7b747e4f3e SHA-1: 80181a812b928929d85c210abc1908b31a87d525 SHA-256: 329647382b9a084e7c0d4ec46fe9f02a48ce8f6b3d20bd268d6f7dfc921967b9
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL 'https://traffking.ru/123?utm_term=tala+excesiva+de+%25C3%25A1rboles.' is flagged as malicious. The ML classifier and ClamAV also strongly indicate maliciousness, consistent with a phishing or malware delivery attempt via a malicious attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://traffking.ru/123?utm_term=tala+excesiva+de+%25C3%25A1rboles In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365542/normal_5fada8d68fd73.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464302/normal_5feb07bdb0db3.pdfIn PDF document text
    • https://cdn.sqhk.co/ludozenidi/nwgeuia/45853937975.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410975/normal_5f9cb25368bd2.pdfIn PDF document text
    • https://cdn.sqhk.co/jekefebiba/cPFdjiF/small_duck_erasers.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485149/normal_5fa782968a1cc.pdfIn PDF document text
    • https://waretufiwad.weebly.com/uploads/1/3/4/5/134581883/c962abfc709.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367919/normal_5fde182de65db.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://s3.amazonaws.com/sonutopexaramuf/53033176340.pdfIn PDF document text
    • https://s3.amazonaws.com/jedadokuti/simplismente_acontece_baixar.pdfIn PDF document text
    • https://s3.amazonaws.com/jezekemunidup/quicken_2014_software_download_free.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/driver___brother_mfc_l2700dw.pdfIn PDF document text
    • https://s3.amazonaws.com/xupovobejanam/free_whatsapp_for_pc_32_bit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/863b3a70-9f43-4a51-b814-5a45271497be/12048583455.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002173a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2173A 5416 bytes
SHA-256: f50f42c05a457e6bdb411eb44bd0d18647ab2ab48ca94e159fc57a55c6485db4
font_01_sfnt_off00022920.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22920 6352 bytes
SHA-256: 3ac2a76a860722e690dc9e76111f92ba57b78639778dfd65e075b8ae54b7d7a8
font_02_sfnt_off000239ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x239CE 13880 bytes
SHA-256: f5ca9a88a7f70350a30321a000d6f7a8dd3ea150f9669e411ed74ad8afd60e94

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