Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5a21d9803a26eec…

MALICIOUS

PDF

70.1 KB Created: 2021-03-02 02:00:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 301b68bd5aebc83126205a3dbbb956a1 SHA-1: d26b0e35c260caa18c6cb66d89227fcbe9dcac8a SHA-256: a5a21d9803a26eec89884b4094f493c53d204913b558a69f2df4c625e6fb555c
136 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a phishing lure, specifically using an SEO redirector to disguise a download link. The embedded URL points to a site that appears to be offering a game download, which is a common tactic for distributing malware. The ML classifier and ClamAV detection strongly support the malicious nature of this file.

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://zajinet.ru/wix?keyword=warlords+2+rise+of+demons+app PDF link annotation
    • http://nazorizuz.medianewsonline.com/97775734788.pdfIn PDF document text
    • http://kpupnov.pro/fumafitibijirxn5u.pdfIn PDF document text
    • http://kifigopetufoge.iblogger.org/89801969503.pdfIn PDF document text
    • http://habirovradik.ru/dispositivos_de_entrada_salida_proceso_y_almacenamiento4jq4e.pdfIn PDF document text
    • http://vipadobotisituz.mygamesonline.org/why_mars_and_venus_collide_sinhala_translation.pdfIn PDF document text
    • https://cdn.sqhk.co/zisuxemop/bQWoDjh/shadow_fight_3_pc_without_bluestacks.pdfIn PDF document text
    • https://cdn.sqhk.co/jimavidozeze/jggjhhr/hachiko_story_tagalog.pdfIn PDF document text
    • https://cdn.sqhk.co/selugijibix/fThi6jc/tugug.pdfIn PDF document text
    • https://cdn.sqhk.co/wunasesev/XiC6lFw/email_notification_sounds_iphone_6.pdfIn PDF document text
    • http://totalcreditcheck.info/multiplication_and_division_fact_family_triangles_worksheetsl0a1l.pdfIn PDF document text
    • https://cdn.sqhk.co/modajili/GUIghxd/nerirazonoturukotu.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/nigimul/64323626273.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/lipobakebigi.pdfIn PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/42693811053.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/55575325732.pdfIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/katinig_m_worksheet.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4F3 5332 bytes
SHA-256: 3fabd98314400d8fe5abe7298fcf655550b90fdaeb9090322a2d462e14d81f5e
font_01_sfnt_off0000e70a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE70A 10540 bytes
SHA-256: ac6c8dffc8ce2992c8f73db943e1467538f6922c2cf3373db611c615a8b3db91

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