Malicious PDF — malware analysis report

Static analysis result for SHA-256 191258c236c3ea2d…

MALICIOUS

PDF

46.0 KB Created: 2020-10-27 12:42:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-22
MD5: 61e398259dfc15eb2b8941128e0ac5d1 SHA-1: b70cf700a59e1cd6a94fec6863b40ff50dc04d3a SHA-256: 191258c236c3ea2d6898c0c108085e05bf97075a143bc9d66f0388ebbad43cbd
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/strik?keyword=el+libro+de+san+cipriano+pdf+gratis In PDF document text
    • https://vuzevarezevarot.weebly.com/uploads/1/3/0/7/130740461/tekisaju.pdfIn PDF document text
    • https://tenikekiso.weebly.com/uploads/1/3/0/7/130775729/3724643f7ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377679/normal_5f96dbdce56aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370299/normal_5f8d8ae0bec88.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374838/normal_5f907c8938f29.pdfIn 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/892fd256-144d-4357-9630-bc7fe7a98505/93226745474.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4098f2b3-8cc1-4c61-91a5-157acf9e51b7/portugus_brasileiro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e97beb5b-2742-4bea-91f3-005133e3b3bb/boruto_naruto_the_movie_english_dub_cast.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6347/1001/files/beast_quest_books_series_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/2555/8425/files/descargar_infinite_flight_global_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5284/3676/files/u_substitution_definite_integral_square_root.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52a44eb3-80cf-46fc-8557-c7253f7f492a/78479215906.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23a2ea0a-6c25-420c-9c00-bd995c5f71ca/fotoxow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c46883f-ccca-4e6f-9b6e-76f4434908cd/classic_philosophical_questions_14th.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c90f2ea1-0c85-42b4-a48f-12f10453558a/king_kong_skull_island_movie_download_in_hindi_720p.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bddce25-4bfe-4933-a3b0-8e7beaf488b1/26554922521.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/30247627270.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/memomumivesosev.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatesawodiji/27172592084.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_off00006361.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6361 5208 bytes
SHA-256: 75b3d15037d4a206b2a1497e6f81d97718fb1a3d53618bc833ab7cfab00e029f
font_01_sfnt_off0000751c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x751C 11984 bytes
SHA-256: 6cb15810e8136f4c16c506878ecc35e5841edd1331bca091a400043b6ef40b91
font_02_sfnt_off00009b05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B05 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176