Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5dc0f367d2247f3…

MALICIOUS

PDF

47.2 KB Created: 2020-10-25 21:09:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-27
MD5: f22016830e72304c633775b7f67c692f SHA-1: 0379ca7e200ecbbe736d4e32e961ef96ee6cb745 SHA-256: c5dc0f367d2247f36a4c5454c55dee0648d94c268e284ed866b1da13fef52bd8
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://ggtraff.ru/wb?keyword=subscribe%20pdf%20free%20download In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/e685ca43-a463-457a-a817-94c70a1f55ed/43065573170.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c079332-5977-4c4a-ac7c-6031d9426769/dejezat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8da6b9c9-c0f5-4d77-aa9c-b14763f5529d/step_up_medicine_in_nepal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcfdd7a1-3658-4e5e-9f68-c70dd0ec5ba8/fimexut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/439cbb0f-f5b6-492f-93ce-bfd3b7250cc4/pimabut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8222/7617/files/ketixelelojufiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7808/1959/files/possessive_nouns_worksheet_with_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/9433/9481/files/40630937565.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/81031977314.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/delowitabojoravaru.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/teresixonibinimo.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/42742310752.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df97bc34-7e58-4e64-a699-8a01a8225456/tableau_2019_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a9aa291-9abb-438d-b29f-e99e7fdc7472/biguridatubuwoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16f3f1cb-5f45-4944-9d21-7d2a4cd7b56b/15099093948.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d43a92e7-f896-4501-b2eb-9e6f61274db5/brother_hl5240_drivers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0ff87a6-7986-45e3-a046-35f06e580aa0/jifase.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47f18c37-2637-479c-b9fc-b45c0e4d5463/9390060314.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f1899a3-c253-4212-a1d5-fcdc169f1bd0/devebikadozujupugozefo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7564a8d4-a6e0-485f-83ea-42710e8d1c2d/bojuvobele.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/390ed58a-cf75-4e70-b6f7-348ccf7ae5d7/mola_ensacada_ou_superlastic.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/caf9f800-2e75-4608-a393-ed1890d70a43/manual_bandit_600.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17f6993d-eb35-4a6b-b88e-25b274c6e7ca/zotefazepaleremej.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B6E 5288 bytes
SHA-256: 384b6163b2ea5d325a95b7e024db3ad9eff0d5068314cc0de1d2744578bda82f
font_01_sfnt_off00007d73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D73 10464 bytes
SHA-256: 56bc3b62fc6521502ff49ee3e36fc1900872f1959333151674050ee15b5263c6
font_02_sfnt_off0000a159.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA159 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c