Malicious PDF — malware analysis report

Static analysis result for SHA-256 20596c7feb8b5bdb…

MALICIOUS

PDF

37.6 KB Created: 2020-10-31 16:01:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-07-20
MD5: fa3e68abe22d57ebb8b1d21fa357fadd SHA-1: bd52b9192d2dbd2dfbb05b8f140c425925cdf583 SHA-256: 20596c7feb8b5bdb251e397527b1244b2b6f0429dbd78efa8160675ef8fe8bbd
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://gettraff.ru/wb?keyword=madani%20qaida%20pdf%20download In PDF document text
    • https://s3.amazonaws.com/tuzamada/25956637900.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/41327289414.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403563/normal_5f99275ab0023.pdfIn PDF document text
    • https://s3.amazonaws.com/vekodupiwarobi/dupejazulavajefi.pdfIn PDF document text
    • https://s3.amazonaws.com/nijosinizo/jamusawewexiwejezapurur.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/junobag.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000040ea.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000040ea.bin)
    • https://cdn.shopify.com/s/files/1/0483/8929/2184/files/experience_certificate_format_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80de59db-78de-42f5-a2ee-e9df77c35bd0/16617770459.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ad61570-6aff-4ecf-b648-c1f8402a56ac/drum_pad_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1deee1d7-a88d-4f62-8de5-e2ae077d7f63/what_is_a_push_factor_for_immigration.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 extracted file (font_00_sfnt_off000040ea.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off00007488.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off00007488.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000040ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x40EA 4984 bytes
SHA-256: 437cd3b9619f5c1f8409dac61fd4654f9b09a239c62a25de2c1e89162ec10207
font_01_sfnt_off00005211.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5211 10232 bytes
SHA-256: 849a03ce814831116fb08b70270e7ce8669029d9331af3808df70986d3faff89
font_02_sfnt_off00007488.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7488 16180 bytes
SHA-256: 6eb2689770756627e885af35df4fc1e0680c378f13be25b273a0cc199212bb71