Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e3690532babcd50…

MALICIOUS

PDF

43.8 KB Created: 2020-08-06 10:51:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 86216d2b3fb06b80bc2ca87545f0e49d SHA-1: b485fba7ace840ab36209e023909f6356db7a383 SHA-256: 9e3690532babcd50902e5a021c4284dc5fa71cffc3055b2d936b1bc3edc0469a
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation or traffic redirection. One critical heuristic identified a link to a known malicious redirector, ttraff.ru, which is likely the primary malicious payload delivery mechanism. The document body, though heavily obfuscated, contains the same URL, reinforcing its role in the attack. No scripts were extracted from this sample.

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=fourth+universal+definition+of+myocardial+infarction+2020+pdf In PDF document text
    • http://files.sarahsaesthetics.com/uploads/1/3/0/9/130969370/vinizu-nozibat-jukitawufoxene-gamifug.pdfIn PDF document text
    • http://nudusi.en.natuurvakantiedenemarken.nl/uploads/1/3/0/7/130738779/2a06591a0.pdfIn PDF document text
    • http://files.awyeahcomics.com/uploads/1/3/0/7/130775231/7dc6cb6.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/1/0433/3967/7855/files/rutikojubujed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3350/0565/files/38132758176.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8962/5241/files/lorakikowifufofu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48695811849.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1548/8163/files/download_the_notebook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3331/1904/files/65076768367.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4379/0760/files/how_to_use__renderitem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/cell_and_molecular_biology_concepts_and_experiments_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0342/9535/files/lafitujaruzevadiwalorux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3015/0300/files/tupesi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6984/9246/files/jobaxidexabasopoduwunow.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 2

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_off00006a08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A08 5788 bytes
SHA-256: 3a9313ac7bfc9662e1e8da3907ef53c88bb2438aa4fa279a6acdd46bfd024bfd
font_01_sfnt_off00007d9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D9E 10628 bytes
SHA-256: f965c518e7cb87858528a4b965a673fe04e90ffd7333bad98c5a07c6c1005ec7

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