Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b19c9de9f7a4260…

MALICIOUS

PDF

71.2 KB Created: 2021-02-09 20:06:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ef0c2ef729ead451f423ad0321de7955 SHA-1: 319a65ba62a36a8710acb5cccc676a322e002083 SHA-256: 8b19c9de9f7a42609b6b9dae085673dda547bfd4b0bcec5d37927152c6a0c579
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/123?utm_term=easy+duplicate+finder+keygen PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4414689/normal_60187a1e032b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4529780/normal_6012b14f17ce9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476946/normal_5ff627319062a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452845/normal_5fd3586aa37b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412591/normal_5fdae7ce5c941.pdfIn PDF document text
    • https://cdn.sqhk.co/migazajigum/fhajiev/zerizumibopidebuw.pdfIn PDF document text
    • https://cdn.sqhk.co/vupapevixu/haigxPr/best_camera_iphone_xs_or_samsung_s10.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451565/normal_5fe2e15528727.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476939/normal_6017042b7f36b.pdfIn PDF document text
    • https://cdn.sqhk.co/metusoteliza/Rk5ii8K/cheap_online_shopping_price_in_china_2018.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468270/normal_5fd7cec19b197.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369182/normal_60209c2988076.pdfIn PDF document text
    • https://cdn.sqhk.co/ruvonusebex/RjfijE0/rugby_world_cup_2019_fixtures_uk_tv_coverage.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/luropi/bstc_2018_paper.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/99676306542.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/47655077425.pdfIn PDF document text
    • http://padapafodimaf.rf.gd/2018_yearly_calendar_template_powerpoint.pdfIn PDF document text
    • http://tigapoxo.rf.gd/julusanaxajilepigapewu.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_off0000d6e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6E3 5444 bytes
SHA-256: 57978d6ad2196e160e657bf4eb77afdedde497e7a6d610dcc09d9933ec059276
font_01_sfnt_off0000e98d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE98D 11248 bytes
SHA-256: ea56cda31ddaee8c4cf8ca6bf8c9bbfe5171cac73d2a0285d8837740e62f0ea1