Malicious PDF — malware analysis report

Static analysis result for SHA-256 670a3d0f98adc22e…

MALICIOUS

PDF

64.9 KB Created: 2020-11-20 00:06:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 6416a44616da667829569ed0d9ff30aa SHA-1: 92d4463c9c4d5bc0eec6089cc9c2101aee051895 SHA-256: 670a3d0f98adc22e65108d00fc13b1e9fd6bbbc8cff8f82968eb787f315ccc4e
196 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
  • 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.
  • 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://trafffe.ru/aws?utm_term=play+tamil+movies++2018 PDF link annotation
    • https://dikanutedageke.weebly.com/uploads/1/3/4/4/134457663/5706045.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366005/normal_5f8b15cfe6d5e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374175/normal_5f97a211c621a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373779/normal_5fa772e523ee1.pdfIn PDF document text
    • https://fabodafulunulof.weebly.com/uploads/1/3/4/3/134372089/xitezulurimebo-vutipo-tipin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408995/normal_5f9cc27f5dd98.pdfIn PDF document text
    • https://bogatawokajo.weebly.com/uploads/1/3/4/9/134900502/7d7f37d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365584/normal_5faacc736a29a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485568/normal_5fb6eb016bb5e.pdfIn PDF document text
    • https://lirabofopexile.weebly.com/uploads/1/3/4/3/134356775/xugiworu_zaxasukobol_nepiluruvuna.pdfIn PDF document text
    • https://fifevogu.weebly.com/uploads/1/3/4/6/134602809/3b2843f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412584/normal_5f93fb3541ed6.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/376c74ef-f6b7-4115-baa8-a1d59b8171be/ion_absolute_perfection_booster_how_to_use.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47fa933a-9795-4395-83a4-1acc55f9a3b5/tenewejixoduwusixin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/993a0980-86da-448f-a339-72125954b46a/the_struggle_for_democracy_11th_edition.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_off0000c21f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC21F 5420 bytes
SHA-256: 6d2f5384d6da7319f3e9cae2f685ed91ad1fa982667ed9dfcf9f854417af1ffd
font_01_sfnt_off0000d48c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD48C 10044 bytes
SHA-256: 9ce59f359695eda8fb2e22914d35b3e18c7a18999b597aca992d1dfe7f321728