Malicious PDF — malware analysis report

Static analysis result for SHA-256 75dff2588b9abbd1…

MALICIOUS

PDF

48.7 KB Created: 2020-08-18 16:52:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4882ef821393a8879e3bab776c17168d SHA-1: bd2ec4e9287e24286d23f508cc331927bad1d0de SHA-256: 75dff2588b9abbd176f9738c5d010dbd7d6b03350349c6fd26ef5af2d0aff59a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to Shopify domains hosting other PDFs, but a critical heuristic identified a link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirector. This suggests the PDF is part of an SEO link farm or similar scheme designed to drive traffic to malicious sites, 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.cc/pify?keyword=24+helping+verbs+list+pdf In PDF document text
    • http://files.andrewmartinsmith.com/uploads/1/3/1/4/131409074/xawusosuren-giviro-susan.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/1/0433/3387/7915/files/bajaj_pulsar_150_bs4_spare_parts_catalogue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0595/9588/files/batman_beyond_remastered.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0264/2075/files/34408942535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0108/5082/files/87370660321.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2778/3080/files/2717051456.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31056735454.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3429/5966/files/bit_mesra_b_tech_application_form_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9834/9471/files/32334510724.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8770/6777/files/organic_chemistry_notes_a_level.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4610/8312/files/simple_monthly_budget_worksheet_for_young_adults.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8026/9462/files/mezutamamobamizomona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/0499/0364/files/autosar_layered_software_architecture.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 3

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_off00007ed3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ED3 5416 bytes
SHA-256: 863bdd37040112aeced0a8d87bd3f4166a2ba4a5f990a0d030c0d667ffd2c402
font_01_sfnt_off0000913b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x913B 11052 bytes
SHA-256: a230da4e7983f6fac8581c25b243b7e5c1617a049321a58fa33b7f8def329bed

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