Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f932a4cc34de7a4…

MALICIOUS

PDF

69.5 KB Created: 2020-11-20 07:10:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: f750a948bf97a1e2b97ee0f3a6eb0e25 SHA-1: dbd6e57b2432118908c68e436e0dd499e18e28fa SHA-256: 6f932a4cc34de7a4f64970c843eeef801a831eca3ec5a81c8690c5f84d8b739b
96 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 embeds external URLs that direct users to attacker-controlled resources. 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
  • 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://traffking.ru/strik?utm_term=dance+lessons+in+bozeman+mt PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4446259/normal_5fa0e315b6b97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365589/normal_5f8b13e137d9c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368976/normal_5f8e6c2e5e79f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379731/normal_5f94ff5b629fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393489/normal_5f955afd42896.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446759/normal_5f9db7f55fb9a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459326/normal_5fb3d8c02a1e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369509/normal_5f8c4c14135bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379473/normal_5fa9e95c34b80.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476416/normal_5fac3e41890d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414701/normal_5f9608cfc6c55.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/7958724c-25a6-487e-bd29-6c44e97e7fbd/fusidupejizij.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/16762013915.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58960642-31dc-496c-bd76-96dc38f8f312/corky_dolls_1986.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94db86af-8d40-4e0d-a0ac-cb14e4bdc44d/costar_carbon_monoxide_alarm_model_9_rv.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_off0000c637.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC637 4824 bytes
SHA-256: e832cfc0672bd58e9b0b2ae57a07043f14348df2967f28e6065b5d07c6055088
font_01_sfnt_off0000d68c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD68C 10444 bytes
SHA-256: 4db049a47e14303b818854da5647739de338d7077b0d51ec1a5819d57ae0bead
font_02_sfnt_off0000f9d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9D7 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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