Malicious PDF — malware analysis report

Static analysis result for SHA-256 7419f384eff21c3b…

MALICIOUS

PDF

45.0 KB Created: 2020-08-18 22:02:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5ab22bbe47be23c4b2b3f3cba4f78b91 SHA-1: 2373d79ddfe051c6d77ad6b567ba13753ce0de39 SHA-256: 7419f384eff21c3b2154353a8140d9baf2accda6e477c567a0372dbb5e856b48
194 Risk Score

Malware Insights

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

This PDF file contains a link farm designed to redirect users to malicious infrastructure, specifically identified as 'ttraff.ru'. The document body, though heavily obfuscated, contains the same malicious URL. The presence of numerous links to external PDFs, many hosted on Shopify, suggests a tactic to obscure the malicious redirector and appear as legitimate content. The ML classifier strongly indicated maliciousness.

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=solo+guitar+playing+pdf In PDF document text
    • http://files.pylkkanenconsulting.com/uploads/1/3/1/4/131412558/55176cfde938bc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5101/5577/files/bulelovalifeletaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9113/1554/files/mabujomijum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7935/1976/files/analog_digital_conversion_handbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6213/2897/files/41466503076.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4133/3147/files/gobivuribiwezifexaxalet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6961/1930/files/28822065016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6310/6968/files/nosuposekulafewiwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2374/4674/files/lightroom_editor_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3767/7989/files/convert_to_word_document_that_can_be_edited.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/46456123156.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 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006679.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6679 5000 bytes
SHA-256: da8f40acf95fd0a902a78f8078dcf4cb048ea44e0fc27b794b39e1a71a5571f9
font_01_sfnt_off00007782.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7782 9992 bytes
SHA-256: 2b63fe4b01f6f62ce20a211ffb36b1c56cd7f5f586403e079cb2b9382ad779a7
font_02_sfnt_off000099bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99BC 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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