Malicious PDF — malware analysis report

Static analysis result for SHA-256 559f9b15ba5adc1f…

MALICIOUS

PDF

70.9 KB Created: 2021-03-06 12:44:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 954a48225618c8f4fc928e3494298e68 SHA-1: f229cf8ca8d13cef5a68075b7907e89e5cc97c52 SHA-256: 559f9b15ba5adc1fe4f6c68766a89182fa81495f535631c8e8a388500cc323a4
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/award?keyword=what+are+the+5+types+of+claims In PDF document text
    • https://cdn-cms.f-static.net/uploads/4382189/normal_5fe6717632162.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377642/normal_5fd66b9e8a2be.pdfIn PDF document text
    • https://cdn.sqhk.co/fajixojemom/ggjj3wP/miromawiwifawo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389805/normal_601de1f50e7bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419236/normal_6012974871834.pdfIn PDF document text
    • https://cdn.sqhk.co/genazeres/XbFhdie/28513660622.pdfIn PDF document text
    • https://wirimodarezekas.weebly.com/uploads/1/3/5/3/135314182/fepogimef_bumutu.pdfIn PDF document text
    • https://cdn.sqhk.co/torujazelome/ho7jhI0/november_playstation_plus_free_games_ps4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464055/normal_602befa48d756.pdfIn PDF document text
    • https://bapefakujina.weebly.com/uploads/1/3/4/4/134483882/8596378.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412413/normal_601843826fa9a.pdfIn PDF document text
    • https://kafiwixuvaso.weebly.com/uploads/1/3/0/8/130874495/8d36f4eb4705db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413835/normal_602c04e369098.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/97f0dbf2-ab62-44ae-b593-02dc748408af/enders_shadow_book_series.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2069d5eb-d3f6-44c3-9b26-9b242a68e1bc/19896952230.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/821232aa-ce85-4323-9f69-7ea84b19f3aa/how_to_calculate_joint_probability_distribution_table.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cc0c4b6-4e8a-4b23-ae53-1eed0bd6cd73/what_is_critical_when_selecting_the_ammunition_for_a_firearm.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43e28198-797d-46b3-b9e5-84f5d940d627/46211657672.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f728164-aeb0-4548-ae81-5823bfe78d3d/namikelawo.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_off0000d69b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD69B 5492 bytes
SHA-256: 6904165c5397c8e0d0b95b6dd14762684fe5582fce760467624149449d906509
font_01_sfnt_off0000e93f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE93F 10924 bytes
SHA-256: 7d84b6f51fb9adbf3eaae6a056ffd6b7984c59daa403fad6711ab449a386361f