Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ab05816f5dab23e…

MALICIOUS

PDF

44.1 KB Created: 2020-08-12 19:06:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1fbc48d156fa11a6eaddd5e1c7b5558b SHA-1: fc1a2a8869a99f88837772a4fa5ad773b6a89d4d SHA-256: 6ab05816f5dab23ee79908abc1af49a0b59f16235f853985ab820cb1b6d00e48
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.com) and a large number of Shopify-hosted PDFs, indicative of an SEO spam or phishing campaign. The ML classifier strongly flagged this PDF as malicious, and the presence of a redirector URL suggests an attempt to lead users to malicious content. No scripts were extracted, limiting the analysis of direct execution vectors.

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=corner+bakery+cafe+menu+pdf In PDF document text
    • http://files.reflexinstitute.ca/uploads/1/3/1/0/131071256/1431724.pdfIn PDF document text
    • http://files.gem-uk-properties.com/uploads/1/3/1/4/131453206/3b488675bbf.pdfIn PDF document text
    • http://files.stcatherineofalexandriachurch.com/uploads/1/3/1/4/131437225/924715.pdfIn PDF document text
    • http://files.hallielee.com/uploads/1/3/2/8/132815961/5788720.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/1/0435/5093/3155/files/dd_form_1149.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7974/6201/files/lolojimomonobozot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4952/5149/files/sixufanusofuvagiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/5848/3620/files/tortoise_svn_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9801/3845/files/9401610684.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2603/8433/files/cummins_n14_ecm_wiring_diagram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8037/5704/files/piwenepigixi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7832/8221/files/80242839815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4146/3204/files/panera_allergen_menu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/84352485314.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_off00006eee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EEE 5300 bytes
SHA-256: fd93710bbfb00ba803062db5a92f958b06d5f1631071123a4d18aabfb1675880
font_01_sfnt_off000080e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80E3 10128 bytes
SHA-256: 41628dc503bf36f5bef899d8a8a0c3e7c27d29e312a7f64bc4d97050f842c741

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