Malicious PDF — malware analysis report

Static analysis result for SHA-256 78f8a6bd79357b4d…

MALICIOUS

PDF

51.5 KB Created: 2020-08-05 23:19:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6b1ef7726d0b57b2b48244495cb0d662 SHA-1: 2f664e7323881635d2ed84c6297713d9eb2c59f8 SHA-256: 78f8a6bd79357b4d08bc6ee795f1afdaee882a2f6d71262e1442533734b2ffb0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of embedded links, many of which point to a redirector infrastructure. The primary redirector URL is https://ttraff.ru/pify?keyword=hernia+inguinal+directa+pdf, which is known to host malicious content. The document body, though heavily obfuscated, also contains this URL, suggesting it is the intended destination for user interaction. The presence of numerous links to external PDFs, many hosted on Shopify, 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=hernia+inguinal+directa+pdf In PDF document text
    • http://files.mad-artist.com/uploads/1/3/1/3/131383657/ninoxasotelasudox.pdfIn PDF document text
    • http://files.joyspringseternal.com/uploads/1/3/1/3/131383255/509412.pdfIn PDF document text
    • http://files.jonniekae.com/uploads/1/3/1/8/131856071/givib_suzut_wizer_wifode.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/1/0435/1026/8064/files/fiwis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5465/1799/files/zujovanaxumaxelukir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8062/0955/files/cardiac_bed_making_procedure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8894/5064/files/formato_apa_sexta_edicion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8212/9320/files/katezapemunuzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9659/5861/files/30854599849.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5021/3274/files/58226735366.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8652/6102/files/12437103019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nosisuzamozozi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8393/2582/files/nerapiwi.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_off0000893d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x893D 5108 bytes
SHA-256: 6b03c2ec12795764c60bf9b59f95fe1e1ca27f519158f7c5840e0021b077faab
font_01_sfnt_off00009aad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AAD 11188 bytes
SHA-256: 6452c5bb7e08ca52e2341f5cb4831789af7001f87578e22f188ad7b494bfe807

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