Malicious PDF — malware analysis report

Static analysis result for SHA-256 31060b494f900a72…

MALICIOUS

PDF

41.7 KB Created: 2020-08-19 17:29:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 88223d365ee01687028d944a2e7612e6 SHA-1: 0fcda75ca9ff294992577c5dd8b3fe23c1dc3be6 SHA-256: 31060b494f900a72c0141708771c9e8fc70d1f03ff6ad33c6d4abb991ad76eda
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=english+crossword+puzzle+with+answers+pdf'. This URL is presented within the document body, disguised as a link to an English crossword puzzle with answers. The PDF also exhibits characteristics of a link farm, with numerous embedded links to other PDFs, many hosted on Shopify. The primary malicious link is the initial redirector.

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=english+crossword+puzzle+with+answers+pdf In PDF document text
    • http://sunifabal.nickdolanmusic.com/uploads/1/3/0/7/130738850/rinedixaf-nujasozareraz-buwutujif.pdfIn PDF document text
    • http://fixova.skimpysailing.com/uploads/1/3/1/8/131856158/joxamu.pdfIn PDF document text
    • http://files.podicongo.com/uploads/1/3/0/7/130740025/kavasuweximo.pdfIn PDF document text
    • http://files.ceramicfingerlabyrinths.shop/uploads/1/3/0/8/130874125/warabivas.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/1/0429/0910/6332/files/11426210681.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7027/4201/files/16211837861.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5535/7852/files/53402481847.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0744/2076/files/3273811852.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8933/0330/files/86694741310.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5294/7873/files/22480182260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7511/6964/files/dufamiziwugudavegovabi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8758/4661/files/arcgis_tutorial_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1574/0314/files/42740242342.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4112/8601/files/pantone_formula_guide.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_off00006400.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6400 5516 bytes
SHA-256: 8c36d99bcd2ce62cb115b663c3e02327777740993a27f105d030fac733f6931b
font_01_sfnt_off000076d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76D3 10316 bytes
SHA-256: c611efc7925e5942f6e1843609b9dbe4e791b994af81bd1119811a49d0518795

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