Malicious PDF — malware analysis report

Static analysis result for SHA-256 3557f84d415f6434…

MALICIOUS

PDF

46.1 KB Created: 2020-08-04 14:41:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 50822ca2aaeb5824e1ea582babe2f0f5 SHA-1: 6efd742db356f1498b9b402401c9a22676d43078 SHA-256: 3557f84d415f643459611433378cf9d667ab5a4a6a7b71aa124a8e1315e4a995
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. This is indicative of a link farm, likely used for SEO poisoning or to distribute malicious content. One critical heuristic firing confirms the presence of a malicious redirector link, specifically 'https://ttraff.cc/pify?keyword=rachmaninoff+vespers+pdf', which is designed to redirect users to potentially harmful sites. No scripts were extracted, limiting the analysis of direct payload execution.

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.cc/pify?keyword=rachmaninoff+vespers+pdf In PDF document text
    • http://files.graindesigns.co.uk/uploads/1/3/1/0/131070109/4591ff3fe1336.pdfIn PDF document text
    • http://bukaf.napervillepaintingandepoxyflooring.com/uploads/1/3/0/7/130776499/jinewejuziwiga.pdfIn PDF document text
    • http://files.fashionxpress.net/uploads/1/3/1/8/131871817/4f5a3.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/1/0434/6504/8214/files/free_windows_7_product_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8260/3934/files/50440184241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9986/4734/files/26049939406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6016/5797/files/vawuvetoganusawenivekoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5440/7580/files/vujinusuzenobikedamumem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6319/7337/files/64934191761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5704/5913/files/ar_15_assembly.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5279/2982/files/fidoxuwovasavibonex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5045/8520/files/zarekubimifidosi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2883/0625/files/93012521215.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8674/0646/files/taziruvefonigujelovofuge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3713/0914/files/46013147444.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 1

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_off0000749b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x749B 5432 bytes
SHA-256: 4f9afc8daa278916c581aa27a07368a17fb7c941e6d30180e859d7c6e12c03be
font_01_sfnt_off000086f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86F6 10760 bytes
SHA-256: 505f59fe0bb37b2623c63215ac90e8f35753a92c8ecd1f1c30f45a36a1acc426

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