Malicious PDF — malware analysis report

Static analysis result for SHA-256 cabb865971dd82fd…

MALICIOUS

PDF

68.9 KB Created: 2021-02-25 21:26:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 41d528dc70dd02d089360a523b93b577 SHA-1: 00349feda9e12c9c632b49da7a7809b442e5bbfc SHA-256: cabb865971dd82fde018d3c46165ef2c24303b5cd8c9277980faf8cd85e5193b
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=ar+test+answers+for+hatchet In PDF document text
    • http://shopbest.online/bachelor_of_business_information_systems_in_canadaxdo60.pdfIn PDF document text
    • https://cdn.sqhk.co/nubavojek/haijkjc/5942642988.pdfIn PDF document text
    • http://chebsvet.ru/84592234339huf0z.pdfIn PDF document text
    • https://cdn.sqhk.co/loganidob/dcXvwHQ/kosenemenoravewujoneniwot.pdfIn PDF document text
    • http://nuloriwilorij.scienceontheweb.net/49631689426.pdfIn PDF document text
    • http://galoomer.online/wupoboduzujekowew4uq70.pdfIn PDF document text
    • https://fometixivoros.weebly.com/uploads/1/3/1/6/131637143/bafa1fbaeeb689c.pdfIn PDF document text
    • https://xavujome.weebly.com/uploads/1/3/0/7/130739328/vitupo.pdfIn PDF document text
    • https://cdn.sqhk.co/fomezawelud/dh1xghw/99055731357.pdfIn PDF document text
    • http://rigoditibalun.mywebcommunity.org/90442358033.pdfIn PDF document text
    • https://cdn.sqhk.co/gapebeve/64qgffk/amazon_echo_dot_discount_code.pdfIn PDF document text
    • https://cdn.sqhk.co/japokaxe/hei2ja2/electronic_protected_health_information_system.pdfIn PDF document text
    • http://zoneeuro.pro/unlock_guided_access_on_ipadpe3ey.pdfIn PDF document text
    • https://getenulezawo.weebly.com/uploads/1/3/4/8/134897364/8266669.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/wejuvono/kexeketunosu.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/whistleblower_report_ukraine_full.pdfIn PDF document text
    • http://tiluxusimutine.atwebpages.com/96115089877.pdfIn PDF document text
    • https://s3.amazonaws.com/netinuwa/35544630223.pdfIn PDF document text
    • https://s3.amazonaws.com/zonivezada/what_is_the_mandate_of_heaven_and_dynastic_cycle.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_off0000d25f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD25F 5016 bytes
SHA-256: 133314e88cee43dfbdce27470fe8f9b748efdc903f889b7dfcb33fb49953af12
font_01_sfnt_off0000e380.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE380 10328 bytes
SHA-256: 91b2da9d97769ffb7ca60f48ff1dd55f639217abe16e1f976dbd86a3e4ee257e

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