Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b56976b07cca98f…

MALICIOUS

PDF

40.9 KB Created: 2020-08-02 11:05:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 03beee17cb60fbf7db66657c7c62b260 SHA-1: 1f5ea5cd5c32241bf0eb78d6235af3a83fdb6583 SHA-256: 4b56976b07cca98fb296e2b8f2fd0449fe41aa4dd3fcc2dc2085270fd0e9d202
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=polaris+ranger+500+service+manual+download'. This URL is presented within the document body, disguised as a service manual download. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. The primary attack vector appears to be social engineering through a deceptive link.

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=polaris+ranger+500+service+manual+download In PDF document text
    • http://files.mathandcoding.org/uploads/1/3/2/6/132682829/2507156.pdfIn PDF document text
    • http://files.oakridgefootballbooster.com/uploads/1/3/0/8/130873718/jivosipipofe.pdfIn PDF document text
    • http://files.trinityjamestown.com/uploads/1/3/2/6/132681602/375267.pdfIn PDF document text
    • http://files.atlasmountaineering.co.uk/uploads/1/3/1/3/131380083/kokuvojajun-masaxedim-zujusokivuvijib.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/1/0434/1432/3356/files/30169158866.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2987/0230/files/nogubokemapitijuporotis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1925/5454/files/43835171854.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9375/4009/files/jasumiwuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3177/3852/files/tugek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5812/5213/files/factorio_4_lane_balancer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7077/4679/files/46956044200.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0176/6310/files/12145395124.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3480/4375/files/daboseligamu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3228/9175/files/kabutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4478/1735/files/2403984711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2703/6322/files/twin_peaks_the_missing_pieces_free_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3337/0522/files/42601526633.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_off0000607c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x607C 5680 bytes
SHA-256: 90497f402dd511501edbe4c76e57d1058653c941c6249ffe033bf3cd372a1c73
font_01_sfnt_off000073d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73D8 10120 bytes
SHA-256: b67263fc94007eaf41106607441b774b6bcfcac813ed2284872392b53237e91a

Open this report in the interactive analyzer, or submit your own file for analysis.