Malicious PDF — malware analysis report

Static analysis result for SHA-256 655e1ef55d4e2742…

MALICIOUS

PDF

69.3 KB Created: 2021-02-23 04:54:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8f2c3e274345a270d784df8b090f0a0c SHA-1: f1c02cf3b49970f7c01c493cf7f04277a826946c SHA-256: 655e1ef55d4e2742a84cf1e57b2909a29ee21a738e82e53e22941c1f2ad066d1
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://jacksth.ru/123?utm_term=oster+roaster+oven+recipes+beef+roast PDF link annotation
    • https://cdn.sqhk.co/nixenexax/iiALsge/53301028760.pdfIn PDF document text
    • http://vienvozvrat.site/bigg_boss_tamil_season_2_hd26ofi.pdfIn PDF document text
    • http://trujillostacoshop.com/e_myth_contractor6tgz5.pdfIn PDF document text
    • http://lnstagramcopyrightmanagement.com/yamaha_power_amplifier_p7000s_manualy7190.pdfIn PDF document text
    • https://cdn.sqhk.co/barosevarega/gjiheYN/epic_little_war_game_wiki.pdfIn PDF document text
    • https://cdn.sqhk.co/zisuxemop/2JSFHgd/basketball_shot_log.pdfIn PDF document text
    • https://cdn.sqhk.co/visukodo/QlCOieM/20867289587.pdfIn PDF document text
    • https://cdn.sqhk.co/vipujitebiki/dz96Fih/76168709594.pdfIn PDF document text
    • http://wersita.space/23814221529crgvj.pdfIn PDF document text
    • https://cdn.sqhk.co/baruduwege/ehdghji/xibuver.pdfIn PDF document text
    • https://cdn.sqhk.co/toliximozupa/Ec2Qmjf/charlie_s_angels_finger_gun_pose.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/gebukil/widal_test_typhoid_report_positive.pdfIn PDF document text
    • https://s3.amazonaws.com/dosalapasenow/ja_economics_textbook_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/debamijizozexo/82681918214.pdfIn PDF document text
    • http://nirobow.epizy.com/bestie_photo_app.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_off0000d0fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0FD 5204 bytes
SHA-256: f09fb6be4e86397c029222276498138c49de4f6eba44173807cd2d7a5576a155
font_01_sfnt_off0000e2bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2BF 11064 bytes
SHA-256: dad720be2672be1e333d22fa0683f3ef3ed10c40fc2075c36a3f4bcde126db62