Malicious PDF — malware analysis report

Static analysis result for SHA-256 83feeecafbbbb13a…

MALICIOUS

PDF

41.6 KB Created: 2020-10-17 01:31:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 943e744aacad223d7ae2abe1ba51d09b SHA-1: 5a7eebeb7cd8d013d887a40b8b63dcbb233d9437 SHA-256: 83feeecafbbbb13abea7e60d109ee2d9d13d74ac1e14b6d2b2bbd37c4ba04f5e
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://ttraff.me/123?keyword=finite+element+analysis+in+ansys+pdf In PDF document text
    • https://boguvetasitob.weebly.com/uploads/1/3/1/3/131380850/misobefogurivo.pdfIn PDF document text
    • https://jaserasozupog.weebly.com/uploads/1/3/1/4/131454215/febafd3d195a9.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/beparinunij.pdfIn PDF document text
    • https://boguvetasitob.weebly.com/uploads/1/3/1/3/131380850/02566.pdfIn PDF document text
    • https://giwakatunu.weebly.com/uploads/1/3/1/4/131437107/0cff3b77b1ac2.pdfIn PDF document text
    • https://pepuzategazeg.weebly.com/uploads/1/3/1/4/131453576/dikepukol.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368768/normal_5f88b35f9a9eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366321/normal_5f8735644eb61.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366367/normal_5f87b75aefb74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366045/normal_5f88d8ec929f2.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/38bdb5c7-4982-438e-ae41-7672ea71c556/gatipedudurolebazosewatas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23b5f32a-b38d-4279-a469-da0567e51764/xutefigobexajofakikopok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71c79c14-35ad-4ee3-80d2-65f86cad9810/86051743554.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17ab2840-2c87-4669-9751-9f0f91b1f79a/3117650412.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7556/6752/files/the_final_quest_and_the_call.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7679/1719/files/kinigobenow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8624/4757/files/video_player_pro_apkpure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3206/7748/files/71882401089.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16edb972-78c0-43e7-8d36-631c78143b2b/21132625679.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8e9f159-7792-4131-a4b0-f7f78aff4956/leloxafegemixuwosigekunut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0499ad31-b9ce-461d-8507-bee1c9db5e2f/jenevonuvokisete.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_off000065f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65F0 5148 bytes
SHA-256: 6acef9d0b67e9099b79f76753d7d4ebe4eb67940bcf4ad00453e244ef8c1023d
font_01_sfnt_off0000776b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x776B 9848 bytes
SHA-256: 5da41ef5c997282442d130891e69967a3454fca961027b7e31f60390df8be26f

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