Malicious PDF — malware analysis report

Static analysis result for SHA-256 8786ff3762a5e7c6…

MALICIOUS

PDF

77.7 KB Created: 2021-02-05 20:32:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 700e50f87f1ad6624d4df933401d5740 SHA-1: 42d1e5d3618697898f97fb4765c800271082031c SHA-256: 8786ff3762a5e7c661b1bde700a87504583d32bef5d82d673325dd68b629b847
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to exploit vulnerabilities or trick the user into visiting a malicious resource.

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://seumenha.ru/123?utm_term=michael+vey+6+pdf+free PDF link annotation
    • http://detobusukited.iblogger.org/45987366308.pdfIn PDF document text
    • https://cdn.sqhk.co/jofijoju/FridtGu/18521502762.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480148/normal_5ff91926ed680.pdfIn PDF document text
    • http://wilitubejibo.iblogger.org/widokaf.pdfIn PDF document text
    • https://cdn.sqhk.co/rifojimuna/cdgibq5/note_making_examples.pdfIn PDF document text
    • https://cdn.sqhk.co/ledusefugize/jjd2hjY/draw_a_stickman_epic_2_free_download_mac.pdfIn PDF document text
    • https://cdn.sqhk.co/xeduwukaxusa/zjb0jgK/dezatavujukaripafabo.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/wunojipu/58216399954.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/windows_movie_maker_cracked_version_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bajuse/33995518407.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifumofelu/char_broil_performance_vs_signature_series.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/teks_asmaul_husna_dan_doanya.pdfIn PDF document text
    • https://s3.amazonaws.com/lowuwofuxali/17355280974.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/daxupedagewirotolula.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_off0000f27a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF27A 5384 bytes
SHA-256: 8014857f080c96fb8f2f159532c49ec977991aee1f2b890448e5c28f91f471bd
font_01_sfnt_off000104e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104E6 11152 bytes
SHA-256: 7bd1cbdda58e25ec690eb4494c6992c74bc6a49c4b5b0ceeff3de4aec2f51be9