Malicious PDF — malware analysis report

Static analysis result for SHA-256 b946e5c023d49649…

MALICIOUS

PDF

39.7 KB Created: 2020-08-19 15:49:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cbaad4b69ca59380f31d89bda432beb4 SHA-1: d8b2c1adb0581e203236255ecb159921c60680b8 SHA-256: b946e5c023d4964917efad029b6526acfedb62bc11d386f506130bff55666581
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the same suspicious URL. This indicates a likely attempt to lure users to a malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, limiting the analysis of specific execution behaviors.

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=2009+cadillac+escalade+performance+parts In PDF document text
    • http://rugar.embracedlingerie.com/uploads/1/3/1/8/131856907/dabokoxikadawog_xajetomakane.pdfIn PDF document text
    • http://files.publicsportsbook.com/uploads/1/3/1/8/131857983/pezadupuzemut.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/1/0433/6618/7176/files/16684852798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jakenetukuzalavat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6285/3794/files/kafudubugaduxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7692/7141/files/prove_triangles_congruent_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7976/2073/files/linkedin_share_url.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9583/5295/files/insomnia_symptom_questionnaire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0903/2863/files/65681576132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/4698/1023/files/dubibovib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8793/8211/files/wetuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6388/5472/files/extraction_of_iron_blast_furnace.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8904/3358/files/ruxukenenigobezen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5915/1009/files/candlestick_graph.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_off00005bd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BD5 5636 bytes
SHA-256: 7c2404349efafd4a8cd4b76bad8b9e7360796e1be9b4c84f27d85fee0f47f877
font_01_sfnt_off00006ed5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ED5 10284 bytes
SHA-256: 94b0b9e9d806865178e84a6eafc6559beba9d8b3408c767b77ec41ce930ccc25

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