Malicious PDF — malware analysis report

Static analysis result for SHA-256 d430d90817c2412b…

MALICIOUS

PDF

32.5 KB Created: 2020-08-11 00:31:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d4316d5b030024fc2a08a45470679d2a SHA-1: 6ed4b063c7ae70157c5e4bc23005a88f45f0910a SHA-256: d430d90817c2412b322a704de13562e72f8b030d4efc1d7bceda8bb5e36800d0
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting a social engineering lure to trick users into visiting malicious infrastructure. The ML classifier also strongly indicated maliciousness. No scripts were extracted, limiting the analysis of direct payload execution.

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=who+s+afraid+of+virginia+woolf+full+text+pdf+download In PDF document text
    • http://files.hoimport.com/uploads/1/3/0/7/130775320/4be032b5.pdfIn PDF document text
    • http://files.savisconsulting.com/uploads/1/3/1/6/131637224/4e60b7c53.pdfIn PDF document text
    • http://files.gbsupplyco.com/uploads/1/3/1/8/131856166/zodagogasepexe.pdfIn PDF document text
    • http://files.peaktherapy.info/uploads/1/3/1/3/131380591/tomutedazav.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/1/0431/0584/5397/files/75685867529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4324/0606/files/basement_parking_plan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9141/0596/files/the_anarchical_society_bull.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6416/4506/files/amino_acid_structure_and_function.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6454/0835/files/sbca_bye_laws.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4315/8166/files/34453268639.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1406/8123/files/51853434898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8624/2209/files/wetozejoninuletenufox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4245/5195/files/diboderupizakogumitekora.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1979/5623/files/free_premium_minecraft_accounts.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 8

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_off000042e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42E6 5536 bytes
SHA-256: 5a970bc102e7fed99cecf7da89099852434ef3d536daf1bdfce22e2a46cb279b
font_01_sfnt_off000055d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55D4 9056 bytes
SHA-256: 472d37d74e5e538540bdea1ba667cbd5e1d900f74e5d67f6313b19f652261247

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