Malicious PDF — malware analysis report

Static analysis result for SHA-256 72f71cb1f1cd6096…

MALICIOUS

PDF

67.3 KB Created: 2021-02-15 15:19:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: abf64cc21c52c7ff87d1071d1f078f36 SHA-1: 98a3f0e24fa662c4b999a49383fabb9b83c9dffd SHA-256: 72f71cb1f1cd6096bc9bf6638bff27deb0ca78d3c665ae8afb88e851cd7e9eb9
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'seumenha.ru', which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it is designed to redirect users to malicious content, aligning with common phishing tactics.

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://seumenha.ru/123?utm_term=the+sparrow+song+sister+act PDF link annotation
    • http://covidcapsule.world/mthode_heuristique_franaisgzmoy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376879/normal_5ff13692cfa05.pdfIn PDF document text
    • https://winateminapalem.weebly.com/uploads/1/3/4/0/134041456/1690333.pdfIn PDF document text
    • https://wabuxopimigom.weebly.com/uploads/1/3/4/0/134042903/b93f420d28ffafc.pdfIn PDF document text
    • http://pochta-24.cc/wajuxiruvavosesebadike6miia.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479214/normal_5ffaf06119c15.pdfIn PDF document text
    • http://tesopinafap.22web.org/54708878198.pdfIn PDF document text
    • https://cdn.sqhk.co/daposofoxig/gi648qc/good_short_life_lessons_stories.pdfIn PDF document text
    • https://cdn.sqhk.co/fezifenax/7ZrDggK/the_master_of_knife_chapter_1_sub_indo.pdfIn PDF document text
    • https://cdn.sqhk.co/bexamajuw/jchhZje/31162061647.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367937/normal_5fd38ef4ef937.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493916/normal_5fde1fbab9e25.pdfIn PDF document text
    • http://fakts.design/349815800898hw3l.pdfIn PDF document text
    • https://jedujidiki.weebly.com/uploads/1/3/4/3/134352610/maliji.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nevejekegasa.epizy.com/cctv_camera_hd_images_free.pdfIn PDF document text
    • https://s3.amazonaws.com/topipovikapari/complex_numbers_ncert.pdfIn PDF document text
    • https://s3.amazonaws.com/begijufadi/introduction_to_geometrical_optics.pdfIn PDF document text
    • http://fixadamobus.epizy.com/70011532981.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/68336342730.pdfIn PDF document text
    • https://s3.amazonaws.com/jedobufudajewu/14894091784.pdfIn PDF document text
    • http://zidojupilazado.rf.gd/flight_centre_travel_group_annual_report_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/xakusineba/16403354460.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_off0000cc22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC22 5204 bytes
SHA-256: 30cbbd26a889a383f562515db09837a009df6a05b6ed7969c63d1fdf93ebe846
font_01_sfnt_off0000dde9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDE9 10032 bytes
SHA-256: e0a48c98a5acf567987b8700ad4d9082c3d3df1e585323f5fc5d0fdf05682d43

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