Malicious PDF — malware analysis report

Static analysis result for SHA-256 69a2c464d55d0d4c…

MALICIOUS

PDF

60.8 KB Created: 2021-02-15 11:53:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: d37d337f51c2aab0514acda6c8524939 SHA-1: b795bd12fb4158cdce8d7e12c2e34c4c09e6997d SHA-256: 69a2c464d55d0d4cc556d609428931cfc1cb4cfa23fd4eeddc23c6f8b6a87c8d
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/aws?utm_term=where+can+i+watch+blue+is+the+warmest+color+online+for+free In PDF document text
    • http://submonster.xyz/975801122569hgdk.pdfIn PDF document text
    • http://choosemadam.site/ejercicios_verbos_regulares_e_irregulares_espaolv2qid.pdfIn PDF document text
    • http://sarkife.site/5323870612497qj8.pdfIn PDF document text
    • http://levantemosaic.com/w3schools_css_position_propertyovzt2.pdfIn PDF document text
    • http://kozlo.space/48323247458ol8wq.pdfIn PDF document text
    • http://websporizle3.com/vidufexobidenuzofonesebofdj.pdfIn PDF document text
    • https://cdn.sqhk.co/tevunufoba/fjedhbo/glory_of_generals_pacific_war_unlimited_medals.pdfIn PDF document text
    • http://usesol.xyz/bomipetosuxibifapexozen5bb7.pdfIn PDF document text
    • https://cdn.sqhk.co/fodexuxefeba/jojce0J/vuvidinavupaf.pdfIn PDF document text
    • http://pixell.store/euro_truck_driving_simulator_2020_mod_apk8tfau.pdfIn PDF document text
    • https://cdn.sqhk.co/butiluluvuk/egqhcja/85661217227.pdfIn PDF document text
    • https://jodegometokak.weebly.com/uploads/1/3/1/6/131606115/4723811.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/penale/2692106739.pdfIn PDF document text
    • https://s3.amazonaws.com/diwitapezu/48845959891.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/29833011609.pdfIn PDF document text
    • https://s3.amazonaws.com/dubiditiginowo/tunnel_boring_machine_operation_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/disputing_stuff_on_your_credit_report.pdfIn PDF document text
    • https://s3.amazonaws.com/ninasivol/78134719028.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_off0000b474.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB474 5368 bytes
SHA-256: 1a954202ee0a8c98c9e0a98a6d5008c1c2a5073f1e80cf86b6e2598f8e286ba9
font_01_sfnt_off0000c6a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6A3 9208 bytes
SHA-256: 0712cf63eaa13d28c8a8041be32eb3aa932c8845904c6f6b5ac5a2633c577203

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