Malicious PDF — malware analysis report

Static analysis result for SHA-256 58889c2ffd6f6909…

MALICIOUS

PDF

42.3 KB Created: 2020-08-09 11:12:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fdf1b809f8335c7ec1c986ce6d739f78 SHA-1: 15f494c733bcd837d90cc25f56dab78f16c59237 SHA-256: 58889c2ffd6f69094d87e216c50d5823010207f89083f7be954716e81f5c771a
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 external resources. One of these links, https://ttraff.ru/pify?keyword=history+of+bioplastics+pdf, is identified as a malicious redirector. The document body itself is heavily obfuscated but contains references to this URL and other Shopify-hosted PDFs, suggesting a link farm designed to distribute traffic to potentially harmful sites. The ML classifier also 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=history+of+bioplastics+pdf In PDF document text
    • http://files.tellyourstory.today/uploads/1/3/1/4/131438557/9038955.pdfIn PDF document text
    • http://files.horseshoecafeandcatering.com/uploads/1/3/1/3/131380263/9158ff.pdfIn PDF document text
    • http://files.jjsdka.org/uploads/1/3/0/9/130969819/98a098cf.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/1/0449/4534/2619/files/old_minecraft_texture_pack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/wepuzenavikatuzobi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0836/8545/files/it_s_always_sunny_season_11_torrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3834/9211/files/vcu_student_health_portal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/0469/5452/files/i_love_to_word.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7951/3752/files/jexiwuxezawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3269/9292/files/47351008906.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3584/5017/files/9678063268.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2553/8980/files/givotelipijesupozemubu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8333/3799/files/the_hungry_caterpillar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3687/4651/files/8520678716.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0262/6202/files/zafojomozulaxanumaboxilum.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 8

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_off000065b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65B9 5352 bytes
SHA-256: b6d0da40604c8a49a408f3ede8205c1c49ddbf06a03794922c3c2649e26a4b89
font_01_sfnt_off000077f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77F9 10752 bytes
SHA-256: 8bbd64451c81ad27ae1873912cb7d824320d0182c6597d775c77216cefbc3a15

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