Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad2788599f9a51cb…

MALICIOUS

PDF

41.2 KB Created: 2020-08-05 13:40:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c26bbd233d4eb0c4c4e1d35f1d4db949 SHA-1: 30c299edd48cd1ba3767bc676a9fb6a681f0ae39 SHA-256: ad2788599f9a51cbfd2dffc233925b660281c577dfa1d8cff02ea676ee5f3d57
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=geometrical+and+physical+optics+longhurst+pdf+download'. This indicates the document's primary purpose is to redirect users to potentially harmful content. Additionally, the PDF exhibits characteristics of a link farm, embedding numerous external links, many of which point to Shopify domains, likely for SEO manipulation to increase visibility of the malicious link. The ML classifier also strongly flagged this PDF as malicious.

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=geometrical+and+physical+optics+longhurst+pdf+download In PDF document text
    • http://files.c-lution.com/uploads/1/3/0/9/130969809/1483957.pdfIn PDF document text
    • http://files.ryancmeldrum.com/uploads/1/3/2/6/132696145/jenidofawexoju.pdfIn PDF document text
    • http://files.thevillagecorner.net/uploads/1/3/2/7/132710678/rojox_pizobaniru_tepinep.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/1/0427/6230/5702/files/nejeseneranisetidulugufo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2104/0792/files/r134a_pressure_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6297/6921/files/beruwef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6424/5925/files/83223937412.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5326/1724/files/wenolosuxelusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8451/3440/files/pipijerase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8246/4928/files/fekizalobejogeros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0351/8882/files/poxaxibidoxuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4853/4167/files/bejenedifeso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6038/7227/files/fesezezof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2270/4030/files/42903998394.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7738/5892/files/katogatufakejuz.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 1

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_off0000623d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x623D 5792 bytes
SHA-256: 3964d94aa878529a7f49763c3fb26b12d4c6a4cad5def5c0bbb095e95dcdfe2a
font_01_sfnt_off000075e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75E9 9892 bytes
SHA-256: bb4f9de130e1d0bbd9b7f9f67c4bfc8d8c474db9c8b8d3c959e726195dfe5cbc

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