Malicious PDF — malware analysis report

Static analysis result for SHA-256 26ff91e449205b9e…

MALICIOUS

PDF

74.6 KB Created: 2021-03-01 08:41:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: fac48a4cab0e2c8db38ddc6f1fbf934b SHA-1: f0d6da4565609fe6849caaa10a241f5033052e81 SHA-256: 26ff91e449205b9e15de5c71f14259a6ef3bb7f120399832137ca293782ef69e
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection. It contains numerous embedded URLs pointing to link farms and disposable hosting, suggesting a phishing or scam attempt. The document body, though heavily obfuscated, appears to be a lure related to Amazon product searches.

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://leonvi.ru/wix?keyword=let+me+guess+license+and+registration+sticker+amazon PDF link annotation
    • https://cdn.sqhk.co/fapolokid/10hehbl/flagstone_patio_designs_photos.pdfIn PDF document text
    • http://copyright-notice-ig.com/26362373935oowlf.pdfIn PDF document text
    • https://cdn.sqhk.co/kulobibab/hb8iihd/savings_goal_tracker_bullet_journal.pdfIn PDF document text
    • http://ultra0.space/khaki_uniform_long_sleeve_shirtwxl6f.pdfIn PDF document text
    • https://cdn.sqhk.co/zaborofisi/jheghgd/pixel_minimal_watch_face_promo_code.pdfIn PDF document text
    • http://robugipunebib.mygamesonline.org/2005_nissan_xterra_transmission_solenoid.pdfIn PDF document text
    • https://cdn.sqhk.co/busumodofu/jiMdggN/gofavajotedazolatusuj.pdfIn PDF document text
    • http://ch-data-2a8fv9s.pw/wozadubuz4a9ub.pdfIn PDF document text
    • http://tafuxasomup.getenjoyment.net/93504306358.pdfIn PDF document text
    • https://cdn.sqhk.co/gulizate/JfjcMhc/birthday_cake_party_mix.pdfIn PDF document text
    • http://kobivoweder.mypressonline.com/18369779881.pdfIn PDF document text
    • https://cdn.sqhk.co/fanoxozowupe/dSjdiiK/who_sings_the_original_hot_rod_lincoln_song.pdfIn PDF document text
    • http://cetapp.xyz/838126242023yy3v.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vugugemo.atwebpages.com/19797979892.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/99286017314.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/zujota.pdfIn PDF document text
    • http://wifepex.rf.gd/kombucha_meme_girl_template.pdfIn PDF document text
    • http://kapirexazi.onlinewebshop.net/17328561508.pdfIn PDF document text
    • https://s3.amazonaws.com/bubeto/konujegefuzoretekarowu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dbb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBB2 2960 bytes
SHA-256: a31aedb3fe800cd2b5c0120397ec9570e12c7cc97febb81e3d6171160c50e6bc
font_01_sfnt_off0000e634.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE634 5316 bytes
SHA-256: 1aaa53288ee1dbb616d1a3746cedae66d5e2fabd7ae7fe01967dcbe27b811162
font_02_sfnt_off0000f83c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF83C 10740 bytes
SHA-256: 35a2a07aa9c224ae790bb922efcaf27d966fda300472e726724541d376ff2b3a

Open this report in the interactive analyzer, or submit your own file for analysis.