Malicious PDF — malware analysis report

Static analysis result for SHA-256 086553bc095a74b5…

MALICIOUS

PDF

66.8 KB Created: 2021-02-12 16:38:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: bf1eb676a7e41366eace6cfa76eb5141 SHA-1: 6edb45749c4f76020278a7aa1778a3a0c4f9d984 SHA-256: 086553bc095a74b58bf55597037e857fffe29dc2fbc90920821c8271eb3fc681
186 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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://leonvi.ru/wix?keyword=confessions+of+an+economic+hitman+pdf+arabic PDF link annotation
    • https://tujuwofaxeg.weebly.com/uploads/1/3/2/8/132814826/7815248.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495531/normal_601af3231187f.pdfIn PDF document text
    • https://rufekelikofevav.weebly.com/uploads/1/3/1/0/131070689/wadoleneku.pdfIn PDF document text
    • https://wijinopupog.weebly.com/uploads/1/3/5/3/135323990/b32010.pdfIn PDF document text
    • https://cdn.sqhk.co/xoradofexul/bYCibWc/39705613641.pdfIn PDF document text
    • https://bopugokux.weebly.com/uploads/1/3/4/9/134901566/ludegikikopo.pdfIn PDF document text
    • https://kafomepavazepa.weebly.com/uploads/1/3/1/4/131409794/8563847.pdfIn PDF document text
    • https://cdn.sqhk.co/mujawiru/aFggqod/best_buttercream_frosting_recipe_for_cookies.pdfIn PDF document text
    • https://jokikisiva.weebly.com/uploads/1/3/0/8/130873994/7d93e581c4a7641.pdfIn PDF document text
    • https://cdn.sqhk.co/kitatoze/dgjigjd/electric_guitar_parts_names.pdfIn PDF document text
    • https://begakidiwadagav.weebly.com/uploads/1/3/1/3/131397934/3032550.pdfIn PDF document text
    • https://kanefudejezem.weebly.com/uploads/1/3/6/0/136056225/nesawolonif.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/tezofuretejom/fdisk_format_fat32.pdfIn PDF document text
    • https://s3.amazonaws.com/megujobemegor/whatsapp_plus_update_2019.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_off0000c7be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7BE 5408 bytes
SHA-256: d905f4f53927688c91c50ce22888693181c34dd21859e34ebf31e3826a30a730
font_01_sfnt_off0000d9ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9EF 10472 bytes
SHA-256: 84e1473eeb9f9e2f0cbad728775e617f6040c85c4b2968828e9a9a792e4feb08