Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5869fdd1d047753…

MALICIOUS

PDF

40.6 KB Created: 2020-11-07 19:57:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 0d1495694f784f16eb263b9cd26fbb67 SHA-1: 75babd462ed355a4cb27dfc673f6ab25bc34a407 SHA-256: c5869fdd1d0477535c4d08acf8cdfc1af7e4b8781a6458c30c9af49ca418b3f6
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://traffset.ru/aws?keyword=eso+alchemy+leveling+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403680/normal_5fa4f046597c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374704/normal_5f98da9159bd3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379385/normal_5fa0e42ae9d1d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404733/normal_5f93b804f0e60.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374024/normal_5f9a5b273368b.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/f4e1dc78-5184-44cb-8b12-800892875a9e/festin_de_cuervos.pdfIn PDF document text
    • https://kotidudip.files.wordpress.com/2020/11/pinemojixapibiwejupaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0bb7f8b-a205-49f6-8174-928492687233/22145794582.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88b00187-ccbe-48ef-8e3e-1b70b384cc2e/playing_blackjack_as_a_business.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3961483c-af3b-44d0-be5f-9be50313a7c0/37223671168.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/434ed063-112c-4b0e-9cbd-dcb7997c5f86/92844474225.pdfIn PDF document text
    • https://wiligudunu.files.wordpress.com/2020/11/straight_outta_tombstone.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_off00005e83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E83 5376 bytes
SHA-256: 313fc1f4622a062a662269ff6ad630eeaabdb547514eafd0457be7e4af810236
font_01_sfnt_off000070ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70BA 10860 bytes
SHA-256: 1e9a1d68418f8db1a5f5f7c7f5a3606393eaf334448f717bb4668f8e0079688d