Malicious PDF — malware analysis report

Static analysis result for SHA-256 b84e3ac57e684b68…

MALICIOUS

PDF

39.5 KB Created: 2020-08-14 04:40:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7fbeca927b70b995246ddea4f550fcee SHA-1: 3fa547854521edac004c74a35c2151631a3a0c00 SHA-256: b84e3ac57e684b68bd23fc308f4398e5d695777b32da3b3a86362f50bfbfb0e7
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links, https://ttraff.ru/wb?keyword=como%20escribir%20en%20un%20pdf%20desde%20iphone, is identified as a malicious redirector. The document body, though partially obfuscated, also contains this URL, suggesting the intent is to drive traffic to malicious infrastructure.

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/wb?keyword=como%20escribir%20en%20un%20pdf%20desde%20iphone In PDF document text
    • http://files.wanderlustvip.ca/uploads/1/3/1/8/131857920/9371008.pdfIn PDF document text
    • http://files.beachesinsrilanka.com/uploads/1/3/1/4/131409090/6816093.pdfIn PDF document text
    • http://pasitifa.marshcreekmini.com/uploads/1/3/1/3/131379179/0b6fc5e6d8eb23b.pdfIn PDF document text
    • http://files.samanthacotterill.com/uploads/1/3/2/6/132681488/rizolusivom.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/1/0430/7868/0730/files/ariston_gas_oven_user_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5913/2069/files/benatabakizowoxalixusape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2926/5574/files/dokiwabosedaxenonumed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/0725/9302/files/banking_exam_syllabus_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4387/1127/files/17641490601.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5511/1589/files/22483756392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8312/8214/files/jajakorevup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7548/6367/files/nuvulogabepeli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/10699911966.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3251/8549/files/siritutezug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81159011373.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_off00005c65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C65 5200 bytes
SHA-256: 431990d581db62f5e55ce2510efbe5cdbc9a3c755d40d9ade00df9d9fefdb33a
font_01_sfnt_off00006dda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DDA 10360 bytes
SHA-256: 099d5ce4ff590f9d0ed334d447db51bee5872cb72d86bd615e626e3fbe259f9e

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