Malicious PDF — malware analysis report

Static analysis result for SHA-256 403ea4ab68a0d7e1…

MALICIOUS

PDF

48.3 KB Created: 2020-11-08 03:20:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: befadb549a0dda7a0570c675d09f5bcc SHA-1: 01b56a84a86d467f79792d326d89fea4d4a0578e SHA-256: 403ea4ab68a0d7e186eb0507c6f0313d9e79ee6ce6b5cdba6f35cb6b70dffe8f
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://traffking.ru/aws?keyword=edimmu+guide+rs3 In PDF document text
    • https://filafibiwi.weebly.com/uploads/1/3/4/3/134316544/pifezofotozadaruwa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402486/normal_5f9bd3e1de7ff.pdfIn PDF document text
    • https://lesesaxaxutetu.weebly.com/uploads/1/3/4/6/134613106/b78baa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366041/normal_5f8f73dc49fcc.pdfIn PDF document text
    • https://mixekolasum.weebly.com/uploads/1/3/4/3/134388380/levugodu_sixonolafobogo_nejudivukep.pdfIn PDF document text
    • https://tivulose.weebly.com/uploads/1/3/4/3/134318041/bde32c8.pdfIn PDF document text
    • https://zunotebizi.weebly.com/uploads/1/3/4/6/134648513/99e526b0.pdfIn PDF document text
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/lebetise-letefivex-jamolojosataxuz.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/9ffc0002-2146-42fa-ad28-54cffa9c8087/laser_temperature_gun_for_humans.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad60be1b-e38f-4a1b-b6a7-b4c9504a4faa/93203309397.pdfIn PDF document text
    • https://s3.amazonaws.com/sitok/son_of_bigfoot_adam.pdfIn PDF document text
    • https://kifebag.files.wordpress.com/2020/11/wonder_woman_full_movie_download_in_tamil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52fd5eae-b87a-4f37-83ca-9dceeda105ed/78595991855.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6382e0d9-3d47-4a22-9fc1-92ff1a8f49eb/melugogosokolezun.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_off00007d55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D55 5024 bytes
SHA-256: 01b262311a5415d36f9d4efbcf770aa540eb93b645be259cb30e89093f2463ae
font_01_sfnt_off00008e61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E61 11508 bytes
SHA-256: ac9254600a73f43a0784979b11cf3d5745f78ffa7a67d7bf2b7e629da3adab46

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