Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a542ba0a677f671…

MALICIOUS

PDF

40.3 KB Created: 2020-11-09 01:45:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 34dd19dc2bb0d9372612a9379c9ec6cd SHA-1: b4b7567fefe9db403eb9c4fb69b02d9d66c50735 SHA-256: 6a542ba0a677f671a45991362351981d63883e07ae6817ebdd77552eb56593f1
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://traffking.ru/aws?keyword=ethical+meaning+easy In PDF document text
    • https://cdn-cms.f-static.net/uploads/4384046/normal_5fa616b9957bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476596/normal_5fa5aadca3360.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/022722d4-71eb-4aa3-8787-e5e44d17cfad/tozesidaramanevedaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5cbba45-a715-4658-9ab6-e1ac950d29a2/qb_strength_of_schedule_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9350f35a-bbe9-4102-b3d7-0ee6663d5f19/sigetopolala.pdfIn PDF document text
    • https://s3.amazonaws.com/zategafozasiru/55998080140.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c90d45d-0d83-47ee-9569-5dfc0fc445bd/flaming_gorge_fishing_company.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f05ec26e-4999-4a22-950b-ffee72fec234/vigikimerelulenelejaje.pdfIn PDF document text
    • https://s3.amazonaws.com/rotowan/zipimapudimorenuwabiki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a8b6fca-4c0d-43bd-8d6c-b490a9a5e6af/keeper_of_the_lost_cities_exile_free_download.pdfIn PDF document text
    • https://misizimafijo.files.wordpress.com/2020/11/suvigavobiposekaxin.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_off000060b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60B9 5176 bytes
SHA-256: 2d2a4508ca0f0595bc443ecfd590b28a6b2563f8132c4016d196bdedde8fb42d
font_01_sfnt_off0000723e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x723E 10220 bytes
SHA-256: 16e1032ad1bab68d3d1092521b0521dcea9c2555ff1a15dde5755766903f0bd8

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