Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f5b7fa26d32f21e…

MALICIOUS

PDF

39.8 KB Created: 2020-11-08 07:55:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: ce153cb04b3731106a6631b8efacd9ab SHA-1: 9fcd951201086acb4fb3d79c9c6acdfe04b8efc5 SHA-256: 9f5b7fa26d32f21e135e321fb42d2fe28e6b22df8b6cffa002cb433a3d935ba4
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://trafficel.ru/aws?keyword=world+of+warcraft+classic+skinning+guide PDF link annotation
    • https://motanaweda.weebly.com/uploads/1/3/4/3/134316912/8823208.pdfIn PDF document text
    • https://luvumape.weebly.com/uploads/1/3/4/4/134438520/d7bc6a2.pdfIn PDF document text
    • https://gifenatewa.weebly.com/uploads/1/3/4/4/134480542/6420080.pdfIn PDF document text
    • https://vafumigoku.weebly.com/uploads/1/3/1/3/131384305/mozes.pdfIn PDF document text
    • https://xexovelez.weebly.com/uploads/1/3/0/8/130813416/808820.pdfIn PDF document text
    • https://rojinotur.weebly.com/uploads/1/3/4/4/134442242/nomexuzezukeg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408478/normal_5fa5d711a8909.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/fubisi.pdfIn PDF document text
    • https://talasawag.weebly.com/uploads/1/3/4/2/134265385/30599720151f50.pdfIn PDF document text
    • https://xazojitov.weebly.com/uploads/1/3/1/4/131408465/6454322.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/4e0d994f.pdfIn PDF document text
    • https://nimewoguvinu.weebly.com/uploads/1/3/4/4/134433183/jojupufunomusibi.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/wajibile/economics_chapter_2_assessment_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57579541-0d82-45b6-b96c-d00a4859da29/82384132102.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_off00005eac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EAC 5360 bytes
SHA-256: 92750c82db1e1fa86cbe3365d3d2e9460d370b86ce81a60bd75799164a8cd3bc
font_01_sfnt_off00007111.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7111 9768 bytes
SHA-256: 9c1403975fda1f424c1bb564c80b24c1e6c3182b52f127456b002a23c55e400f

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