Malicious PDF — malware analysis report

Static analysis result for SHA-256 02d5dc8970b33909…

MALICIOUS

PDF

66.1 KB Created: 2021-02-23 00:25:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 49d775ebb5f36fb03418f2fbe6d5ebb9 SHA-1: 9046a424c72d5025ff8859acc9b3d9bd121bbc7f SHA-256: 02d5dc8970b3390913305555362b313d4c77a2b4bf459041227d05e9bae5a4ec
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://yafferge.ru/wix?keyword=calculus+graphical+numerical+algebraic+3rd+edition+chapter+8+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365583/normal_5fd3c3096eb7e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379855/normal_600112eaceea3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384318/normal_60007697c8c42.pdfIn PDF document text
    • http://fatokopos.22web.org/how_to_use_rule_of_thirds_photography.pdfIn PDF document text
    • https://cdn.sqhk.co/jigavozef/n802yjd/real_steel_robot_boxing_champions.pdfIn PDF document text
    • http://uggi-ugg.com/how_to_file_a_reverse_discrimination_lawsuitugecf.pdfIn PDF document text
    • https://cdn.sqhk.co/dofewijoras/jwRgigi/97142509040.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485823/normal_600826464d636.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zojusis.rf.gd/21326353639.pdfIn PDF document text
    • https://s3.amazonaws.com/jasipefulaxiduj/27360193780.pdfIn PDF document text
    • https://s3.amazonaws.com/satedafadusizo/nbi_online_application_form.pdfIn PDF document text
    • https://s3.amazonaws.com/tuletivotarupu/badnam_song_video_full_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/wewuxuviwar/52176589674.pdfIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/22379184553.pdfIn PDF document text
    • https://s3.amazonaws.com/xapijifas/60539731977.pdfIn PDF document text
    • https://s3.amazonaws.com/wuzalugiseto/50595646984.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/43911667191.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_off0000c61d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC61D 5972 bytes
SHA-256: 8159fcbd5768fe1c63fbd43ae8c1109bb500c5f87e660437d935de53fcca23ae
font_01_sfnt_off0000da35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA35 9516 bytes
SHA-256: c924925b188dc95f4220e30169e4f36bb44fe8e092959dc2913b10e1a48675e7

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