Malicious PDF — malware analysis report

Static analysis result for SHA-256 59c0a8c4fa7b9c3d…

MALICIOUS

PDF

47.7 KB Created: 2020-11-06 04:11:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: f8c793e7bf15a32f1b81ab30d662f57d SHA-1: 8dd0a178bdb214dfd397e69b0803830384e2cc20 SHA-256: 59c0a8c4fa7b9c3dfb7043b306f6753bdf208b2928cafb40a701ab1e4291e4ad
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=uss+enterprise+haynes+manual+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4389352/normal_5f9c57c415bef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381788/normal_5f9253a3bcfcb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385231/normal_5fa230ce81dbe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384628/normal_5f8e62e5ca993.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443810/normal_5fa006beb22e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377401/normal_5f9203f344766.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367625/normal_5f8756e6899e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419218/normal_5f9b5f3c6462d.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/nitatotol/maroki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a098d77-ac4a-4c51-aa56-a5f675b0b46f/media._player_11.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c4173a0-50bc-494f-9d5c-ff5416f831a1/jujiwetolisibotup.pdfIn PDF document text
    • https://s3.amazonaws.com/fazujo/88474798717.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89bd59a1-a030-46c5-afd8-a62ba96dfa03/what_is_a_trace_table_in_programming.pdfIn PDF document text
    • https://s3.amazonaws.com/widuxade/40593213408.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/baked_potato_with_onion_soup_mix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c15c0e47-0742-49dd-aa51-94a76395426c/bufete.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_off00007cb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB5 5376 bytes
SHA-256: 9da3ce0019661e926186947bcbeef1903da28a36dcb98cbea95508cadb4792fc
font_01_sfnt_off00008ede.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EDE 10244 bytes
SHA-256: a359879807bfbbfa5ab96c7b949b32bd2476c950db56353b6a6d2e3cf41340ea