Malicious PDF — malware analysis report

Static analysis result for SHA-256 9296388d1e4fc783…

MALICIOUS

PDF

54.7 KB Created: 2020-08-12 05:41:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7461295c88c26346b51e073efddb2cae SHA-1: 42c6271849f665dd4d81064b554dbccffc4af467 SHA-256: 9296388d1e4fc7838986181f2f470d7562652fef3c375a9884d311dce1aa0150
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=embriologi+atresia+ani+pdf'. Additionally, it exhibits characteristics of a PDF SEO link farm, embedding numerous external PDF links, many hosted on shopify.com. The document body is heavily obfuscated but contains the same redirector URL and a list of other PDF links, reinforcing the link farm and redirection attack pattern. 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=embriologi+atresia+ani+pdf In PDF document text
    • http://files.monacannation.com/uploads/1/3/0/7/130739564/kigenabig_dofuti_xadaneva.pdfIn PDF document text
    • http://kopusofov.totheflixs.com/uploads/1/3/1/4/131438137/1945126.pdfIn PDF document text
    • http://files.accuratehomeinspections.ca/uploads/1/3/0/7/130775750/7940005.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/1/0435/2465/3224/files/9918079790.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8267/0485/files/biviro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9000/9502/files/15554864835.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8442/1022/files/gemelepifuxiril.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6766/0693/files/sindrome_de_cadera_en_resorte.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7070/8125/files/beckett_price_guide_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9432/7975/files/12977947857.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2784/9639/files/merowurijukutazabem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0673/0144/files/pimivusidoxamuvoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2210/6271/files/dubai_expo_2020_logo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37394074323.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2122/2567/files/walmart_grant_application.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9300/7272/files/79831120879.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009724.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9724 5460 bytes
SHA-256: b92a613a6559e5aadf96b1e51660acbd99392f796267e15683c856254a713b7c
font_01_sfnt_off0000a998.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA998 10656 bytes
SHA-256: 36c28f1f1b20bad267c2547974dc823e93f21e35cfd6592e18e97bf7b1a9e0c3

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