Malicious PDF — malware analysis report

Static analysis result for SHA-256 b24f38159419cc8d…

MALICIOUS

PDF

73.6 KB Created: 2021-02-21 14:09:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: f9f63f2752235f6ca40795dbddfb5218 SHA-1: 855e807ccee8d7c318ba158e5e217a95fd8c4333 SHA-256: b24f38159419cc8d2a9f8bd7e2583a3cb7972225de008ec2e80f0e21f282ea97
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://druttle.ru/wb?keyword=how%20did%20the%20end%20of%20the%20cold%20war%20affect%20latin%20america PDF link annotation
    • http://itdiscount.pro/buker_ba_pashe_audio_song_freeksdpq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418399/normal_5fc70cd7c1534.pdfIn PDF document text
    • http://pimolala.22web.org/napexunafutemimoj.pdfIn PDF document text
    • http://pabazumakubonok.66ghz.com/apocalyptica_plays_metallica_a_live_performance.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393890/normal_601c72a35c9d8.pdfIn PDF document text
    • http://info-pages.ru/vivavifupesi2bdkn.pdfIn PDF document text
    • http://ipai.online/2018_indesign_calendar_template_freepn3ep.pdfIn PDF document text
    • http://opssmall.space/93697596609naa2n.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378827/normal_5ff82c275798b.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/ligole/51704681218.pdfIn PDF document text
    • https://s3.amazonaws.com/nuselufuzo/wajufilufabakuputasifum.pdfIn PDF document text
    • https://s3.amazonaws.com/feliso/vedarutijen.pdfIn PDF document text
    • https://s3.amazonaws.com/mujevubutukoxu/51734987005.pdfIn PDF document text
    • https://s3.amazonaws.com/tinezedu/circa_survive_juturna.pdfIn PDF document text
    • https://s3.amazonaws.com/wuxupewu/58474574827.pdfIn PDF document text
    • https://s3.amazonaws.com/jenisozazewubo/best_action_movies_2016.pdfIn PDF document text
    • http://xabuvale.epizy.com/ditin.pdfIn PDF document text
    • http://wajabopekat.epizy.com/why_is_my_ipad_not_charging_past_1.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_off0000e3d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3D8 5136 bytes
SHA-256: 18527401054785e29daf4a4a2b485a666a4d4393abef64f4ded871eabf606585
font_01_sfnt_off0000f535.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF535 10484 bytes
SHA-256: 06e132eaf4cb2ba1a8db1dd3a392d391fd93c678dc905b34553b75e1e2a2773a