Malicious PDF — malware analysis report

Static analysis result for SHA-256 321f9268b5808445…

MALICIOUS

PDF

48.8 KB Created: 2020-08-18 17:24:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9fa4da57bab496be8f9c082e5b9cea0c SHA-1: 3d608aafad6b6f9b1694f3b32e8c9d697cdc0143 SHA-256: 321f9268b58084456919a7f609e7572f846eae34138fee2d707ad24039ccf227
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.cc/pify?keyword=balance+sheet+analysis+ratios+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. Additionally, a PDF link farm heuristic suggests the document is part of a larger SEO manipulation effort to distribute malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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=balance+sheet+analysis+ratios+pdf In PDF document text
    • http://fapuxosiv.benny-oschmann.com/uploads/1/3/1/4/131407057/dizevu-lobede.pdfIn PDF document text
    • http://files.mercedesugarte.com/uploads/1/3/0/7/130740184/2488704.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/1/0433/0687/7080/files/nexunalazuzifoginiwaboliz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5099/0753/files/gomixapokuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2014/0191/files/verisign_timestamp_server.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0453/9387/1016/files/bus_stop_method_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5846/1863/files/rejezajitokusedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7140/6241/files/86769447603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sexewagufik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nalajenoderemomepofelefa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2400/6823/files/53817824483.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7819/6129/files/93136208790.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 2

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_off000075b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75B4 5396 bytes
SHA-256: 0dc421831a3771d6b5f01ac054a2f04e295c2820c6cbb7bd60c5c9b7d7d480a1
font_01_sfnt_off00008800.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8800 14472 bytes
SHA-256: 114b81b4e8aef24a8d3210cceb6696c3500ab58070744ba09d38b4951274d93c

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