Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bacec0d93b71e43…

MALICIOUS

PDF

33.1 KB Created: 2020-08-20 11:58:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6f15ac984f0b7c5caf976d2b24cc59a9 SHA-1: 8c57dc4b65985cf1c78ab5319882618ca6a50e28 SHA-256: 2bacec0d93b71e43f0d781f195c01d1d90a73c645c27688fca7e4545a04385bd
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, many pointing to PDF files hosted on Shopify. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is likely the primary malicious payload delivery mechanism. The presence of a large link farm suggests an attempt to either distribute malware or manipulate search engine results. No scripts were extracted from this sample.

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.com/pify?keyword=bro+sammy+nsem+foo In PDF document text
    • http://tegemajis.samanthagagnon.com/uploads/1/3/1/4/131407241/jiwamelezu.pdfIn PDF document text
    • http://files.freshstockjapan.com/uploads/1/3/1/4/131453633/1119338.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/1/0431/8085/1362/files/swot_analysis_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0507/4838/files/2080295144.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kupesuditijativerawepafu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6299/2799/files/73714370253.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8832/1435/files/applied_maths_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1690/3080/files/37010491179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5650/4744/files/pamutitexojo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/farunejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8118/8003/files/zotulap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0107/0247/files/33370563039.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
🗂 Part of campaign: freshstockjapan.com 6 samples

Related samples 3

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_off0000466d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x466D 5032 bytes
SHA-256: d92e8a2f93fb539fe2db9c42e218f52629b4f4fbd87613f70dd101a2931a3904
font_01_sfnt_off0000577f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x577F 9608 bytes
SHA-256: 8ca3ee9e39e22dd8043fd6360069171d1c8bbf177620056780fff42238f153ed

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