Malicious PDF — malware analysis report

Static analysis result for SHA-256 33bc51650991bb9f…

MALICIOUS

PDF

71.4 KB Created: 2021-02-15 19:17:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 73962948609f4741c82d73149189775b SHA-1: b66a79b634d61d44b864611099f7f0e886ea81b7 SHA-256: 33bc51650991bb9ffdfc76537c148d7705b5dbb0c6060835f8b0f30e624381c1
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jottigo.ru/wix?keyword=drakengard+3+dlc+trophy+guide PDF link annotation
    • http://pannochki-art.com/56842567804q2y5q.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372719/normal_60189f4d77f39.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372354/normal_60089ca3da4d4.pdfIn PDF document text
    • http://legexenajulejof.iblogger.org/top_bollywood_songs_zip_file_2017.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451365/normal_6019847bd8c4f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473384/normal_5ffce4611c6a1.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/legesiliv/android_9_pie_samsung_novedades.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/lonipogodinofeso.pdfIn PDF document text
    • https://s3.amazonaws.com/bomupi/19589622998.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/urosepsis_nice_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/wufujudisu/polaris_blue_encount_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/chemistry_periodic_table_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/24975284424.pdfIn PDF document text
    • http://vowefaxi.epizy.com/providing_feedback_to_employees_template.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_off0000da74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA74 5484 bytes
SHA-256: b883aa1fe0f2278f8267e01dda2d6fa7b8c3ec78309d3e6a31b8f47a10d19323
font_01_sfnt_off0000ed29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED29 10292 bytes
SHA-256: 6389753553360a073e0f92c100341bbc0683e30b6d97cef82dee4b4f3b616bc3