Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd84502002448166…

MALICIOUS

PDF

45.5 KB Created: 2020-07-31 08:47:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cd8e38b0978c01a766c5a4713ce60e5c SHA-1: 5137f521c9af8cc0ba92c6ddf9c5827e41195c41 SHA-256: cd8450200244816666580be4801207edc1a5c102a7c05ef7977e698652bffddf
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with one identified as a malicious redirector. The ML classifier strongly indicates maliciousness. The document body appears to be obfuscated or corrupted, but the presence of a malicious redirector suggests an attempt to lure the user to a harmful site, likely for phishing or malware delivery.

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=zaitsev+rule+pdf In PDF document text
    • http://files.manassehart.com/uploads/1/3/1/4/131409244/dubedusamowu-verikowiluzatol-silajijani-zowurusaxonigam.pdfIn PDF document text
    • http://files.newyorkthespians.org/uploads/1/3/1/8/131857544/rokawuxemuvatodabax.pdfIn PDF document text
    • http://files.tanooklings.com/uploads/1/3/0/8/130874030/nofujefiludonavog.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/1/0429/7375/7603/files/kopivenura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2044/3045/files/18499541540.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6455/6710/files/5925597229.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1895/2612/files/18125764360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3689/2584/files/63391238692.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1321/8199/files/semolusumawugadoboni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4839/4143/files/32296492059.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0512/3493/files/87627399059.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8374/1849/files/masigaxisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6641/6534/files/soferevipavirirawitutota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8072/0294/files/38098561643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4883/6004/files/8361422679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bewewolifokolugetu.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 5

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_off00007696.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7696 4716 bytes
SHA-256: 302a606403b009a5a74b8c0fef817f4e14628981b36ce6b8d7c89fedfb2c3743
font_01_sfnt_off000086b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86B3 9908 bytes
SHA-256: bda6eeb95f08390902532e1b9ded89265446dd4572b59bc9107ce5d90c02358f

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