Malicious PDF — malware analysis report

Static analysis result for SHA-256 d50cb8197eca6351…

MALICIOUS

PDF

41.2 KB Created: 2020-08-08 11:24:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 127871d2a48fdbe95b29d84c1f2cbeb4 SHA-1: bc64c4351577ac192578cbab70680e244fa1d144 SHA-256: d50cb8197eca6351da9c8853cf3d0c503c3ce915ce815920c837e836d87789f1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Addends

The PDF contains a large number of embedded links, with one specifically identified as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the URL that was identified as a malicious redirector, suggesting the document's primary purpose is to direct users to malicious content. No scripts were extracted from this sample.

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=oracle+spatial+database+pdf In PDF document text
    • http://files.westsoundartandmusic.org/uploads/1/3/2/6/132695813/7898684.pdfIn PDF document text
    • http://files.rebeccatrehearn.com/uploads/1/3/0/8/130874543/7231999.pdfIn PDF document text
    • http://files.nw-churchofchrist.com/uploads/1/3/0/7/130776460/3392946.pdfIn PDF document text
    • http://vovixan.christianmusselman.com/uploads/1/3/0/7/130775732/2515456.pdfIn PDF document text
    • http://puvot.dandmtowing.co.uk/uploads/1/3/2/6/132682883/2622281.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/1/0432/6129/6790/files/pdf_to_dxf_converter_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8986/3580/files/xezixeze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9241/8468/files/dilipekaxapisapof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5045/8520/files/ziluwamoxagu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0128/2711/files/sikexobo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2118/6718/files/apa_style_reference_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5521/7814/files/75860586667.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8940/2779/files/sozutikudisimalitore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2469/4942/files/74004910258.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4571/6129/files/mobominiguvefavemegojeva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0189/6347/files/73478408907.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 2

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_off0000630f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x630F 5316 bytes
SHA-256: 58c17913771a332b7610ac44886c772177a0b35630fb226b3d64b5bee7265aa3
font_01_sfnt_off00007524.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7524 10264 bytes
SHA-256: c0c1af915470a5b25563fb7512e179fbe91aa229ab863c1ec464562836b8818c

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