Malicious PDF — malware analysis report

Static analysis result for SHA-256 35943e4cbf6ffe28…

MALICIOUS

PDF

46.9 KB Created: 2020-08-01 22:47:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f9c1f84dd8860a6ec19e67942c804ee4 SHA-1: 2662f02a1848fbbc08120b05a9ffe4c889dd8351 SHA-256: 35943e4cbf6ffe2889668025f403852280079ffc486fa149c45a3194040bd770
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, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=list+of+adjectives', which is also flagged as a malicious redirector. The presence of numerous links to Shopify domains suggests an attempt to create a link farm for SEO manipulation or to host a large number of redirectors.

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=list+of+adjectives In PDF document text
    • http://files.overandoutpetsitting.com/uploads/1/3/2/6/132680986/648a12a3e0a.pdfIn PDF document text
    • http://files.flyfishinginlouisiana.com/uploads/1/3/1/4/131454098/4f0a3.pdfIn PDF document text
    • http://files.nataliehiningscenicdesign.com/uploads/1/3/0/9/130969192/8234624.pdfIn PDF document text
    • http://files.tohsthecenter.org/uploads/1/3/0/8/130813366/8188632.pdfIn PDF document text
    • http://files.rentfromdrew.com/uploads/1/3/1/4/131410158/fafodurusafigez-xaxesojus-zeruxegawun.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/1/0432/4599/4146/files/developmental_biology_10th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9242/7430/files/63372941849.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0214/9539/files/43408236488.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9085/4566/files/40665628408.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5540/7519/files/57165281744.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4343/8242/files/83045178167.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3622/9278/files/zokofi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4644/4960/files/14352177165.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4930/2693/files/kumezemarumolasejuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6534/3133/files/milokewijukuwepez.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_off00007be5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE5 4964 bytes
SHA-256: 77fa1058b271f8f13e6f9976b3e1afefc383ce6cd090ab08679b248c1d36b7ec
font_01_sfnt_off00008cef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CEF 10040 bytes
SHA-256: 3a5db0656244ce42fc2d9f01902d8bf2e3fe94faf9e614131905e4fdc42f0267

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