Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d1f6535ec33d79…

MALICIOUS

PDF

40.2 KB Created: 2020-10-02 02:55:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-28
MD5: 94859449251b1558639085e646806d1e SHA-1: 25d5bae3db0b3d415fff3eec1e3edd9217742da5 SHA-256: c5d1f6535ec33d790483afaae8dfcf1de0857439e3a9c23364186a52f21161ff
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://cctraff.ru/strik?keyword=serana+skyrim+marry In PDF document text
    • http://files.viproulettesystem.com/uploads/1/3/1/3/131378776/2658880.pdfIn PDF document text
    • http://files.karmanlee.com/uploads/1/3/0/7/130775982/1384279.pdfIn PDF document text
    • http://files.yang-enhume.com/uploads/1/3/1/4/131408439/7d718994d77f150.pdfIn PDF document text
    • http://puxoxis.edgeunderground.com/uploads/1/3/0/7/130739904/zapuzevazib_kilunodevijawub.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9354/4091/files/showbox_apk_ps3_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/8300/1756/files/how_to_get_your_own_discord_id.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1848/5923/files/rubber_cement_glue_for_tires.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0445/9170/files/aha_acls_provider_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3039/6574/files/nepewosuzunip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7ac1bd2-991d-443c-8ede-d972510df7a4/68981245879.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/387dfeda-ce3e-4b11-ba75-c9a6e94f6000/lorapotoparalixusagafup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/064d4a2a-c9c9-4c86-9e2d-7729004d316a/ponujekubavenotafewogi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6621068e-6540-4b97-bdde-3491da6023c4/19801085550.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_off000060d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D3 5068 bytes
SHA-256: fc9822ef1d602a4f679213083af512a728f40bcbfe50b078635ea559fbbd62fa
font_01_sfnt_off00007204.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7204 10060 bytes
SHA-256: 20baebc7396e31788d9e9de3a2ebde71f9e72a670256f6ad943a4ec0b7fd0507

Open this report in the interactive analyzer, or submit your own file for analysis.