Malicious PDF — malware analysis report

Static analysis result for SHA-256 74da9c1d3d123c58…

MALICIOUS

PDF

47.3 KB Created: 2020-08-24 14:42:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1259403615db04c8888a383359f43f21 SHA-1: d5e128657282e7579c20d09b68b0998e7f717277 SHA-256: 74da9c1d3d123c5836d06075211c5742e8ce556bca9c6c083e581dc0aaa4f51b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic firing indicating it points to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that matches the redirector found in the heuristics. This suggests the file is designed to redirect users to malicious content, likely for phishing or malware distribution.

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.com/pify?keyword=perforated+sheet+metal+fabrication In PDF document text
    • http://tewomo.cutekidscrochet.com/uploads/1/3/0/9/130969060/wufoxotijo_tofopujud_barujiwup.pdfIn PDF document text
    • http://jikon.behinddallas.com/uploads/1/3/2/3/132303301/benekubizi-wuderixuvut.pdfIn PDF document text
    • http://xeneta.adrianbc.org/uploads/1/3/1/3/131380500/gakamigipafe.pdfIn PDF document text
    • http://files.zoefriedman.org/uploads/1/3/1/4/131437333/9ac72.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/1/0429/9954/6010/files/72730740735.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8299/8170/files/ruwimodexunazubadus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/1678/2741/files/bannari_amman_padam_video_ing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/basic_concepts_of_electrical_and_electronics_engineering.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5943/7975/files/ammonium_formate_ph_in_water.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9091/2159/files/43012208766.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0715/6128/files/unilever_annual_report_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/xewato.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5858/4986/files/drdo_ceptam_07_notification_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0496/8603/files/39156719900.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4882/7040/files/26877762056.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 4

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_off00007aa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AA8 5404 bytes
SHA-256: 171751b186f1d40b533b9e52c490555d21d2f53815f9c3e0c489ddbf75a3f4e6
font_01_sfnt_off00008cda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CDA 10304 bytes
SHA-256: b33858ea29acc526766c73567e1eadb2f1b1084fbf4d42f9eb3fbc9ebf682394

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