Malicious PDF — malware analysis report

Static analysis result for SHA-256 84f2795f9ddd0e35…

MALICIOUS

PDF

41.0 KB Created: 2020-08-19 11:10:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4ddc78936f247bf058ad3667490ef07d SHA-1: 66d86dce72e17d81b7cc3903725bcb5bb583cc8e SHA-256: 84f2795f9ddd0e3574f38009471ebf940ac835f9500f098d58e30f405c5cd2c8
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically a redirector at 'ttraff.ru'. This suggests a phishing or scam attempt, likely using a lure related to 'loom knitting guide patterns pdf' to entice clicks. The presence of numerous external PDF links further indicates a link farm or SEO manipulation tactic to distribute malicious content.

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.ru/pify?keyword=loom+knitting+guide+patterns+pdf In PDF document text
    • http://files.belovedportraitsbypatti.com/uploads/1/3/2/6/132695519/7857371.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/1/0429/9977/5381/files/54638225060.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5667/6507/files/jofofitusonelekofilakupo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8841/2836/files/58174392240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9646/5823/files/hard_geometry_problems_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8555/3061/files/76117250443.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5217/9364/files/dumojakuregukipowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dojedeteremedadedarovir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1083/3058/files/isometric_grid_a4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9597/2256/files/woocommerce_related_products.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7571/4715/files/boxivoxi.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_off00006234.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6234 5332 bytes
SHA-256: 82bdbeebc1b02ad5241b2e9e120ec2d7519de8d4c78252248bfee73f95e52a5b
font_01_sfnt_off00007447.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7447 10236 bytes
SHA-256: f73a07d1d5ac863a696504d62a1fcd62c4d4df13426f3721e62f0f3fee5d8a58

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