Malicious PDF — malware analysis report

Static analysis result for SHA-256 be118c5036812ef9…

MALICIOUS

PDF

78.6 KB Created: 2021-02-13 07:28:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c6d37f114713b359c7e3b984d1d55915 SHA-1: 37e8b27b966503d87f56ec54f0d12897bfdf022c SHA-256: be118c5036812ef9d97bbd626d521458bc5c98e0dfb6efdee994bbf51b9f8e72
194 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
  • 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://crophysi.ru/wix?keyword=2008+toyota+highlander+service+repair+manual+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4383571/normal_60275cb22df15.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453144/normal_5feb65c277a69.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495985/normal_600b6248b8a85.pdfIn PDF document text
    • http://domavera.ru/wekezagagolenumavebu65u3n.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382190/normal_6004b9cdd054d.pdfIn PDF document text
    • http://heretythere.site/89803363383wjwpo.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/wusigipufuvowix/59272333288.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/animation_composer_free_for_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/nijudow/66598340784.pdfIn PDF document text
    • https://s3.amazonaws.com/xeropizuwe/wekixuje.pdfIn PDF document text
    • https://s3.amazonaws.com/xukanomarexumu/bmw_f10_android_auto_retrofit.pdfIn PDF document text
    • https://s3.amazonaws.com/xapijifas/plus_size_formal_dresses_with_sleeves_australia.pdfIn PDF document text
    • https://s3.amazonaws.com/bexolamabad/growth_hormone_deficiency_diagnosis_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/nice_guidelines_sepsis_treatment.pdfIn PDF document text
    • https://s3.amazonaws.com/zatasipezeg/kotoboraxebufisovase.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/symantec_dlp_14._6_maintenance_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/word_game_answer_4_letters.pdfIn PDF document text
    • https://s3.amazonaws.com/mamukawaxatali/guzugesas.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_off0000f49a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF49A 6104 bytes
SHA-256: 2331893169aa016cae252ca753f7239d68fe72502ee3bc55cda7a085ba0dc44d
font_01_sfnt_off00010949.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10949 10428 bytes
SHA-256: 87c65fb4c568d1948cf61bbc0d0ebf7f44988281eff4ecaa43a7bfb1ae05b4a1

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