Malicious PDF — malware analysis report

Static analysis result for SHA-256 56e5a229ad471ec0…

MALICIOUS

PDF

39.6 KB Created: 2020-08-21 02:19:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 83126c29f94b4509dd481d3e97578366 SHA-1: d6a6ed99603a0005838d1212cb80ac87a0f34935 SHA-256: 56e5a229ad471ec0f57758cf9efe81e488439400611c12383aff02891abea569
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF files. The primary malicious URL, 'https://ttraff.ru/pify?keyword=hand+sewing+book+pdf', is designed to deceive users into believing they are downloading a sewing book, but it redirects to malicious infrastructure.

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=hand+sewing+book+pdf In PDF document text
    • http://wazuw.pacsyr.com/uploads/1/3/0/7/130776008/gadaki-gasinafupige-kiwigugorore-rinibobide.pdfIn PDF document text
    • http://files.bremertonfoodline.org/uploads/1/3/0/7/130738956/fobaja.pdfIn PDF document text
    • http://files.incredibottle.com/uploads/1/3/1/4/131483371/5866005.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/1/0439/1229/8648/files/xonokifikuworujujapipez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2258/0886/files/parasonowepuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1653/5720/files/71148671985.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0491/2031/files/bugiwerim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7812/3680/files/tutorial_excel_2020_indonesia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3945/7429/files/52716597818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8590/3525/files/don_t_let_s_start_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9309/8660/files/30878226659.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 6

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_off00005cd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD6 5336 bytes
SHA-256: 767a3a2350818f230ebfcb9db08809fcbae1a3a2cd42c68e7d73d3d660c065a4
font_01_sfnt_off00006f22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F22 10348 bytes
SHA-256: f630be7cc6d047072a3f348dab0c2b7c22a26dbe49abc6d59ab945545f9fe80b

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