Malicious PDF — malware analysis report

Static analysis result for SHA-256 33f3f6c79e57f12c…

MALICIOUS

PDF

66.2 KB Created: 2021-03-01 09:40:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: da25faa7262afbc79f6f62bd844d1625 SHA-1: dd3ac98155eb77cbe4665251ed23f33ed11ec0ce SHA-256: 33f3f6c79e57f12c8fe1d509a612023abb419b41747c3b12e6295980a3e1c313
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://maypoin.ru/award?keyword=how+hedge+fund+get+money PDF link annotation
    • https://butevexonukuzi.weebly.com/uploads/1/3/2/6/132681970/matopinan_wapuduvakuli.pdfIn PDF document text
    • http://zonizubiro.getenjoyment.net/fuzovafavosufuvuxepi.pdfIn PDF document text
    • https://gamevuwi.weebly.com/uploads/1/3/4/5/134525912/gobevazetuve_zirevafifubos_pefavenoj.pdfIn PDF document text
    • http://pogawubujogeje.mypressonline.com/71245169303.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479237/normal_6028765b54bfd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460686/normal_601aef9be32d4.pdfIn PDF document text
    • https://kibakexamu.weebly.com/uploads/1/3/1/0/131070561/rosiworep_dotux.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371498/normal_5fee01340ea34.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/genijusemu/joomla_eshop_templates_free.pdfIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/jurnal_pencegahan_penyakit_jantung_koroner.pdfIn PDF document text
    • http://wuparol.epizy.com/14265511477.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/endoscopy_report_for_peptic_ulcer.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/jojenutujef.pdfIn PDF document text
    • http://nigowona.rf.gd/19904463474.pdfIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/limaloxetemo.pdfIn PDF document text
    • https://s3.amazonaws.com/mogedozara/alps_mountaineering_guide_table_review.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/rufubarik.pdfIn PDF document text
    • http://kofaxafogi.myartsonline.com/10402460457.pdfIn PDF document text
    • http://xizokokov.epizy.com/how_to_cook_rice_in_prestige_multi_cooker.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_off0000c6b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6B3 4960 bytes
SHA-256: 5586fab001efb7beb72b84df5b2d9bd6dfd94396ca4c95d077b946a54e8259d3
font_01_sfnt_off0000d78f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD78F 10636 bytes
SHA-256: c20c819d681536d697c67a8a2766dd5b93b44280c4f61757545ba631152077d5