Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f20c0e504f7374b…

MALICIOUS

PDF

76.9 KB Created: 2020-11-30 16:16:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 66e58d0da7010ceb046cf839cda4fc4c SHA-1: 11f8db352adfeb3d50405bfc753a6686aad2f90e SHA-256: 7f20c0e504f7374b7b0d0982e546c4716307db6f4fe638c40f106a5143e692e7
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to a search query, aiming to trick users into visiting the malicious link.

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://trafffe.ru/strik?utm_term=cooped+up+meaning+in+punjabi PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4371248/normal_5f97b52023813.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390382/normal_5fc1da3e416c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426410/normal_5fb3b6c40c59b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/sosupejuxofedo/80nf70_mosfet_datasheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f00cb710-c671-4e62-9616-30a0ab7ba967/starships_of_the_galaxy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a14d6069-b8ec-4fa2-9afd-b9b106421345/biographical_thesis_statement_examples.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d80c5dca-7e7c-428f-b9ed-a55249a8c886/oldumu_yar_remix_vintage.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9026805-8b12-4c50-b172-c582653d1c9d/bowflex_revolution_home_gym_video.pdfIn PDF document text
    • https://s3.amazonaws.com/xopugup/hd_movies_telugu_sites.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b5aa87e-1b37-460c-af26-09f11e67255a/a_wire_rope_sling_with_a_strength_of_10000_pounds_and_a_total_working_load_of_2000.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82d5883d-f9f9-4c35-8ff5-cb53f1aa6fc3/5140829038.pdfIn PDF document text
    • https://s3.amazonaws.com/jidagafinuxesu/pulse_booking_app.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/dederotofelaribepesol.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c746.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC746 5096 bytes
SHA-256: 36264910b1d3ab7ceb7fc0ab5d5986fbf8f9dc864c432fe6e1e5299f198e104c
font_01_sfnt_off0000d883.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD883 4592 bytes
SHA-256: 79fbd01f6853fe215203854c984b142768965631de8e87a49d4ce56cbcaec7aa
font_02_sfnt_off0000e945.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE945 11528 bytes
SHA-256: 2fa28d9670a21f30bbcd0bf6d482300d914eb61bd7835c2e3af20695297def89
font_03_sfnt_off00010fa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FA6 16096 bytes
SHA-256: 9853a4a918762215dfcba51349555ff48d39e56332efe18e2f333ca30d8a5b61

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