Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6b1b2d80a5ef281…

MALICIOUS

PDF

69.8 KB Created: 2021-01-04 03:54:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: c70f6fbcfe37b2917babaae0d9af3d7a SHA-1: 1951f72a51f21c97f3b5f16ce068621faa1a18ca SHA-256: e6b1b2d80a5ef281d8cc6e767eb8f4e9842f592f2c44f9fc4ef5697ebc7ee51a
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ggtraff.ru/123?utm_term=significant+figures+worksheet+%25231 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367951/normal_5fdc147bd0fd9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419235/normal_5fcd831e2a911.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367617/normal_5fcb8fc4702b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479210/normal_5fc203703338d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415308/normal_5f976f6149e00.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451563/normal_5fc02944ce4b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379374/normal_5fa62fb1ace4b.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/002270ba-1bfc-4594-97bd-0e3a73735fa8/read_daniel_x_watch_the_skies_online_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1662910f-39c4-49e5-a925-fc2251209ad6/removing_roms_from_retropie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83b2af06-8156-44ee-91a2-3d6f5887b142/examples_of_concert_reviews_for_college.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0027a518-4419-48c3-8f68-c7e5359b6121/jakajalab.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/47978082066.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/96246071407.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7153f3f3-76eb-4382-a911-42d50876056e/redington_butter_stick_1wt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00e331b9-bd2a-4163-8854-713590cc1405/lamabikaj.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_off0000d50c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD50C 5368 bytes
SHA-256: bc736bfac02a4cd4440906971396f9ff51d582bcdf15746ed4e46d548e00330b
font_01_sfnt_off0000e767.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE767 10272 bytes
SHA-256: 91d04c7327f23b4a5e9285ac80f5e23a951ed53140b892cfbd64511fe56ae597

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