Malicious PDF — malware analysis report

Static analysis result for SHA-256 680975c36f5d7210…

MALICIOUS

PDF

39.8 KB Created: 2020-08-19 00:23:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e5becc06e78a8f726d3c3f325be8c740 SHA-1: d695f3cf3b9f3a42842e92147ab12858d0452670 SHA-256: 680975c36f5d721029894329dffcc5bd35836e54cdcc62d6345edbe32a27d60e
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service known for hosting malicious content. The document body, though heavily obfuscated, contains URLs that are part of a link farm designed to appear as free downloads, likely leading to phishing or malware. The ML classifier strongly indicates maliciousness.

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=acrobat+reader+11+dc In PDF document text
    • http://ruzuxap.standupprojects.com/uploads/1/3/1/0/131071164/miwax.pdfIn PDF document text
    • http://dafob.thelupiegirl.com/uploads/1/3/1/4/131438563/c8ebe1.pdfIn PDF document text
    • http://files.bqmedia.net/uploads/1/3/1/3/131379919/666f61.pdfIn PDF document text
    • http://files.lincolnfencecontractors.com/uploads/1/3/2/6/132681938/7c5f525598fb.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/1/0432/9183/6566/files/calculations_in_clinical_chemistry.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0813/0200/files/poetics_of_architecture_theory_of_design_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9716/9824/files/51932440764.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1021/2519/files/42237056092.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2562/8327/files/flyff_blade_equipment_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8893/7120/files/copy_string_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9772/5864/files/flowers_for_algernon_novel_csat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2692/2146/files/gungeon_laser_sight.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6127/2995/files/factorio_blue_circuit_blueprint.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/jiwugemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8470/7992/files/famofogep.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_off00005d95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D95 4904 bytes
SHA-256: 8514f7b1a1131057f77c3da6199566b8f46203ceb01c218ee8ed478b21f94bbc
font_01_sfnt_off00006e49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E49 11012 bytes
SHA-256: c41daac077bf67b785db9816644b13928b0110168058d5da3955038c57caf48e

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