Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecd238089d0e8f57…

MALICIOUS

PDF

41.0 KB Created: 2020-08-14 23:37:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 263e36a657d4af43f05540600e813411 SHA-1: 005134aaa58e1959b6f0a0972e8e45953862678e SHA-256: ecd238089d0e8f57fa16d44393c6b4343bbcf30de154c04e5d9b022f711f2d4b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, including one pointing to a known malicious redirector at 'https://ttraff.cc/pify?keyword=3d+pdf+exporter+free'. The document body, though heavily obfuscated, also contains references to '3d pdf exporter free', suggesting a lure to download or access malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful sites.

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.cc/pify?keyword=3d+pdf+exporter+free In PDF document text
    • http://files.icihealthandsafety.com/uploads/1/3/0/7/130739288/8225453.pdfIn PDF document text
    • http://files.maritimereunion64.com/uploads/1/3/1/3/131379266/bemidonuvirimu-wolerobu.pdfIn PDF document text
    • http://jegero.rainierdrainageimprovementco.com/uploads/1/3/1/8/131871729/e15bbe.pdfIn PDF document text
    • http://files.athometutoringperth.com/uploads/1/3/1/6/131636655/xifizepaw.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/1/0432/4016/1435/files/artritis_idiopatica_juvenil_gpc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3680/1184/files/99537578438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/pupiludosukuful.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7386/3842/files/xavitojavegojisidibibe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5430/1338/files/waxixiwidefaruwano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/40451661980.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1512/7708/files/arrtez_de_vous_trouver_des_excuses.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8147/2929/files/99753870696.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58143530911.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0047/1456/files/fezokudulatawawemopu.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

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63D4 4752 bytes
SHA-256: 7f01f3b5c22dfd40ea6fc8f46f515780dbbe3622cab0265baf3dd1ddc665a043
font_01_sfnt_off00007414.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7414 10448 bytes
SHA-256: 5c6273dbc0aaa4d151275970a9512d6a66049c5cf70cdbf0a935b56efddbe363

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