Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bdfc5d159734580…

MALICIOUS

PDF

63.9 KB Created: 2020-11-19 00:23:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: ebdbe96f89b11f824c507822444ad2b4 SHA-1: 122350e48b3d85214b53fa0fb20e2abba0d69ce7 SHA-256: 2bdfc5d15973458036ef70320b3f0f99a74a657d710867c8b71d9041c56456ed
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=170+cm+to+inches+to+feet' is identified as malicious. The document body, though heavily obfuscated, appears to be a lure related to unit conversion, suggesting a phishing or scam attempt.

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://traffking.ru/123?utm_term=170+cm+to+inches+to+feet In PDF document text
    • https://cdn-cms.f-static.net/uploads/4468536/normal_5fa4e57289324.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448740/normal_5f9f33d5253c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496216/normal_5fadc3f50b28c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368978/normal_5f885876204b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370285/normal_5f9c6aa641f32.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365636/normal_5f98da818714a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366952/normal_5f89ebbfbc0fa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365649/normal_5fa17a33ef003.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c402c9cf-ef61-4775-a14b-710e582e736f/protein_filler_for_hair.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/468c8cc8-e712-484a-b93a-0aef86b012f7/37176164475.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c86a1973-4c34-4b47-b427-e84de17bda82/58788456075.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9c70c08-69af-4035-be1b-5ac9769535e1/24489996815.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/178d6b23-3da4-485c-91e5-4941e1f37998/24869295638.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_off0000bf20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF20 4960 bytes
SHA-256: 683303b350527b62e26e299ae44fb50d5c9dd15f7157b587ad146abaf38d51c7
font_01_sfnt_off0000cff2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFF2 10328 bytes
SHA-256: d26fda81e50162a6735ecd4ac4aa95ffa9e93fbf356c2bc9958f950e16aa709a

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