Malicious PDF — malware analysis report

Static analysis result for SHA-256 263476c886b85905…

MALICIOUS

PDF

82.6 KB Created: 2021-01-11 18:03:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 2313d80d61c6744bd7249e576d13a65d SHA-1: eb74420a2761367f86375cd97244f12068850e6c SHA-256: 263476c886b85905674e3236aef2a4937c62c1e0acaf5991c2e5a6c50b420683
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. ClamAV detection and ML classification further support its malicious nature. The document body, though heavily obfuscated, contains keywords related to 'suspicious package training homeland security', suggesting a lure to a malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffnew.ru/123?utm_term=suspicious+package+training+homeland+security PDF link annotation
    • https://cdn.sqhk.co/tiwumixe/igdrKSm/39949871901.pdfIn PDF document text
    • https://site-1084368.mozfiles.com/files/1084368/dmv_driving_test_questions_and_answers_2018.pdfIn PDF document text
    • https://site-1174958.mozfiles.com/files/1174958/radowufop.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376869/normal_5fed61e18a8d2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468534/normal_5fc59f21c6001.pdfIn PDF document text
    • https://cdn.sqhk.co/develezuwa/Jib4jbL/bingo_wings_before_and_after.pdfIn PDF document text
    • https://site-1166621.mozfiles.com/files/1166621/50129858938.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/tometubufimopim/hustle_me_line_dance_step_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/28268498952.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/kipepalalovutoti.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/tamil_nadu_open_university_books.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/free_clipart_retirement_party_invitations_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/tiduro/qb_products_microwave_cavity_paint_msds.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_off0001056c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1056C 5756 bytes
SHA-256: eecdd632186806500649ff76a0fb5d49fac98210f22743655fe2ba7db9701d84
font_01_sfnt_off000118e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118E4 10656 bytes
SHA-256: 13745784e2bfa8abf465ed0af562c5b63e5b197828e0b1979d06ac5b1d6d6f84