Malicious PDF — malware analysis report

Static analysis result for SHA-256 36e6f9aaf239ebc5…

MALICIOUS

PDF

72.6 KB Created: 2020-11-22 00:10:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: b7dbe1aa8a7b67459161c8e18f524c2a SHA-1: 7f80aafed4239dcfe822bededfe51a9721812e7f SHA-256: 36e6f9aaf239ebc523c29a8794179cf192b94016522f4b6282d730078711593f
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://cctraff.ru/wb?keyword=pathfinder%202e%20bestiary%20pdf%20free In PDF document text
    • https://pixirexujana.weebly.com/uploads/1/3/4/5/134527097/1963786.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407085/normal_5fb76875c45ba.pdfIn PDF document text
    • https://gobitinu.weebly.com/uploads/1/3/4/9/134902795/c139c5a3cbd0208.pdfIn PDF document text
    • https://titenukom.weebly.com/uploads/1/3/4/5/134523185/ririmama_savinekexani.pdfIn PDF document text
    • https://zafozudakajadev.weebly.com/uploads/1/3/0/8/130814863/xujewonagamaxu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416791/normal_5f962fd126e9f.pdfIn PDF document text
    • https://pekireraseg.weebly.com/uploads/1/3/4/7/134720831/xosilos.pdfIn PDF document text
    • https://natizupasa.weebly.com/uploads/1/3/1/4/131437725/jidurerelofizovon.pdfIn PDF document text
    • https://pixamowogiru.weebly.com/uploads/1/3/4/5/134590731/c5e3b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/569dd9b1-1f3e-457c-8fac-975c6f382b29/mupinovadepetixa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ae774e5-fcf3-4de5-9322-a5841a3638d1/35715002281.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c4c5579-5ea2-4dc9-9114-853a092d3e4f/.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87c1f26f-82fb-4c24-9824-7f739fcf8b39/varetikozaboni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/897cdb73-dc8c-4e15-b8f5-55f99410ee93/47966316212.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e79d40a-62a9-4263-b3dc-aabe9bf57065/73626455798.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10d5ed11-e7a4-46db-aca1-cbb42cad0636/buwovexijijirofuti.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_off0000d701.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD701 5472 bytes
SHA-256: 187e304fabbb3f9ec0b29f119365ccba0baa2ea2db5fbe29f3afd44260eda2ad
font_01_sfnt_off0000e99a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE99A 14632 bytes
SHA-256: 3d0286e1fb36e88efcda424abe43df79530ae25e5655f928c8c87a6a158ec5de

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