Malicious PDF — malware analysis report

Static analysis result for SHA-256 af260687876993bb…

MALICIOUS

PDF

44.1 KB Created: 2020-10-23 05:50:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-21
MD5: 945d07b6d30ed78dce4eda8caa986886 SHA-1: 992e5467821f8567c3529274d2edc34c30bb2396 SHA-256: af260687876993bb675a6f5c3db231f525c8dc813fd55b0ddf7bc2608c9e2eea
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.
  • 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://ttraff.ru/123?keyword=the+mayor+of+casterbridge+bengali+pdf In PDF document text
    • https://zilavexeredora.weebly.com/uploads/1/3/0/8/130874610/nogoxefi.pdfIn PDF document text
    • https://nulixedupalaz.weebly.com/uploads/1/3/0/7/130739510/puzapekoli_rezika.pdfIn PDF document text
    • https://laratenin.weebly.com/uploads/1/3/2/8/132816160/zonobuxijonazawafu.pdfIn PDF document text
    • https://kisogegexene.weebly.com/uploads/1/3/4/3/134374262/6634666.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387219/normal_5f8e8472381f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401703/normal_5f90ca2ec58d4.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/fasanag/tamil_yearly_calendar_2019_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/99651425200.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/pofatinemufosame.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/enzymes_as_biocatalysts.pdfIn PDF document text
    • https://s3.amazonaws.com/gogonof/wefitevixaxiledemin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d66d836-4c80-4247-8e85-c1086b8770ff/sufuwugatefewadizotukam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73725bdd-d221-40c7-8031-dba28f15bf48/97309593397.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7f8c757-d7a9-4bc5-ad0e-3a2aea2e6d61/46432548127.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a60910ff-35db-4668-8928-58ccfc40eb4f/sozerurug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6d9a67f-f4fd-4d61-9616-d796511fe8b9/chronologie_histoire_de_l_art.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6300a50-067a-4606-8efa-6e1a3e0eb588/4179458605.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2650b359-78d7-46e5-a54b-35237b682fcc/14991424010.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/312ef0e3-960a-474e-8761-dbd9e99801c8/29834209159.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_off00006a48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A48 5760 bytes
SHA-256: 5a863b3bd50b5ba62b08f8d5fe9f915bd6e5071e843d5b53ddbbe70b832ebf4d
font_01_sfnt_off00007dbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DBE 11204 bytes
SHA-256: 1562c3901ce1a06dd454b771f7563eac287cf95891e3b3d92882d5a310802a5c

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