Malicious PDF — malware analysis report

Static analysis result for SHA-256 d04c3b9160f28f19…

MALICIOUS

PDF

91.9 KB Created: 2021-04-01 14:09:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: bf7cef0234f6513e04b2dcb93ce56290 SHA-1: b4922f8a12f272564993ae68c08f6eb19161e92d SHA-256: d04c3b9160f28f1905500097fb882d66c892c51273e8d3b27f1be9ab85ff71ea
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, identified by heuristics as an external URI and flagged by a machine learning classifier and ClamAV as malicious. The document body, though heavily obfuscated, suggests a lure related to 'chakra healing chart pdf', likely intended to trick users into visiting the malicious URL for a fraudulent purpose. No scripts were extracted, but the presence of the malicious URL is a strong indicator of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://vilenefex.ru/award?keyword=chakra+healing+chart+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4455914/normal_6031b862acd59.pdfIn PDF document text
    • https://cdn.sqhk.co/xuzuvazol/w5hcidq/dubagisepukekozoz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383692/normal_6040e1ea8f127.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384296/normal_5fffa2bbc492d.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/CvgiczF/ragaduwojak.pdfIn PDF document text
    • https://cdn.sqhk.co/velabolo/dGH6Nst/50211863807.pdfIn PDF document text
    • http://theharaka.online/68709016210cg8fm.pdfIn PDF document text
    • http://winwites.space/2006_scion_tc_blower_motor_replacementhff7a.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://s3.amazonaws.com/kavalukato/44342139985.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f5b6583-03f5-4acc-a50e-7b410048acdf/interpreter_of_maladies_quotes_shmoop.pdfIn PDF document text
    • https://s3.amazonaws.com/waduzirader/cowpens_weather_report.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/41830598032.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f55a945-05b1-4d51-9aa7-ec3d3ae5400e/2011_dodge_avenger_ac_not_working.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ecb6595c-19b1-4552-ac21-c856c0fdab0c/bojari.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/ruwigutug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d81d37d-6eb7-4ed4-8366-86c16e874c13/59951021856.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63dc1a3e-0fdd-4eb6-944b-577616ad7aa6/the_c_programming_language_second_edition_solutions.pdfIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/who_is_infj-t_compatible_with.pdfIn PDF document text
    • https://s3.amazonaws.com/selivuvumepaveb/kalpana_old_naa_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/datarofapakil/gibson_financial_reporting_and_analysis.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010f82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F82 5004 bytes
SHA-256: 844d8d89c05f5578ef6080b6b1c1ef565ae0da3cc91fcaac598a2c5d13d17560
font_01_sfnt_off00012078.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12078 3040 bytes
SHA-256: d9ebdcaffc72aacb0bda98d87c9ee7f8b3ba744b8f1a86086bbb4f57a08fae07
font_02_sfnt_off00012c9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C9C 11492 bytes
SHA-256: 90edffa9020ba1e92b0e18d3d31c6a05cd9ee5a55ab8dbdc681b38cc130d6ca5
font_03_sfnt_off00015397.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15397 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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