Malicious PDF — malware analysis report

Static analysis result for SHA-256 2da6154a1a89d247…

MALICIOUS

PDF

41.9 KB Created: 2020-07-30 18:59:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ddb0b2fb5efbf9684baf1d6afba24910 SHA-1: d723cdd0d30ff9ee46fc43be6967bb8ac6eb8208 SHA-256: 2da6154a1a89d247493a1b1da00cf2d9917a03cbcd235a519b9d3d062de91289
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically 'ttraff.ru'. This indicates the document is designed to redirect users to malicious sites. The presence of a large number of embedded links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to improve search engine visibility for malicious content. 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.ru/pify?keyword=arduino+ide+programming+tutorial+pdf In PDF document text
    • http://files.santabarbaraflyers.org/uploads/1/3/1/3/131379591/c4b9eb1.pdfIn PDF document text
    • http://files.saintshaven.org/uploads/1/3/1/4/131438260/bawemevisakukeretig.pdfIn PDF document text
    • http://files.melaniebates.net/uploads/1/3/0/8/130874322/vopofejazepagi.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/1/0434/1746/9080/files/mosesapupog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4472/4133/files/boxedufezokobivoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75555741983.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0813/1233/files/miwivufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7790/1214/files/ziritudivanabedabifoduxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5177/7185/files/195327713.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8346/3832/files/88397254875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/bevipamudapesomitakib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1356/9690/files/39756688767.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8003629611.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 5

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_off000066e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66E6 5052 bytes
SHA-256: 67da1c4795c041863164cb1cddd0cf491077e7d07fd28223e0ccc17744cfa747
font_01_sfnt_off000077f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77F8 10160 bytes
SHA-256: acf6a118ef32f0f0d5ea6f57c530055de4a150a5a6bf24a7096a39c93c86610f

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