Malicious PDF — malware analysis report

Static analysis result for SHA-256 08702ba22380d95a…

MALICIOUS

PDF

39.1 KB Created: 2020-11-06 17:00:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 203e882209ea3258298e2bef7f4ac45e SHA-1: 2d3a96b06c31f7318779301056ef1eebd498a23c SHA-256: 08702ba22380d95af9f13e9a3d2ce1f07d4e7d875d7f25d04895cc6897400f5b
194 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://traffine.ru/123?keyword=bacterial+transformation+lab+report+answers In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366980/normal_5f927163e9eba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386073/normal_5f94f0ad3ec49.pdfIn PDF document text
    • https://lilawowawumoxo.weebly.com/uploads/1/3/1/4/131453384/furararunumirirofe.pdfIn PDF document text
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/sujolosi.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/tapexiw/10435893526.pdfIn PDF document text
    • https://s3.amazonaws.com/tosasugokod/59988116402.pdfIn PDF document text
    • https://s3.amazonaws.com/jenisozazewubo/idylis_humidifier_wicks.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2a623ef-5f92-4a9b-8502-a4c4632040b5/jubuwe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22c13648-0123-4b17-9443-abfa38fad005/modofetix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/978000ea-3d3f-480b-9745-5e871526074b/melebulefugaxam.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/gelobokuxirifepelexip.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/kukipipemopasojibufal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d3a5bae-a3fb-440c-a502-3d3d691019da/73356122534.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_off00005976.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5976 5444 bytes
SHA-256: 8dbe12bafdd38e391c50e4883994de089c0a7e2913bad38801cefda16d462b82
font_01_sfnt_off00006bee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BEE 10480 bytes
SHA-256: 1cee644aca07d235ebda1155999313c33c40ee4621c6703aabc56acd1231f9c1