Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3a40c3da16eb4ee…

MALICIOUS

PDF

76.4 KB Created: 2020-08-08 21:15:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9ca6712c83017bea13e900396160cdbd SHA-1: f46577f319755bbf92b439681ebabf0384f4d352 SHA-256: e3a40c3da16eb4eecea9fe11f911c99969f5f22a4e81c68a7d13055d55ae25d5
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised as a document about psychological characteristics of older adults. The PDF also hosts a large number of external links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic. The ML classifier strongly flagged this PDF as malicious. The primary attack vector appears to be social engineering via a deceptive document title and a malicious 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.cc/pify?keyword=caracteristicas+psicologicas+del+adulto+mayor+pdf In PDF document text
    • http://files.creativecounselingsrq.org/uploads/1/3/2/7/132710787/5366484.pdfIn PDF document text
    • http://files.phonekeysystems.es/uploads/1/3/1/8/131871814/fejinelefeviz.pdfIn PDF document text
    • http://files.coorsdentists.org/uploads/1/3/0/7/130775556/946a865834fc9e.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/1/0435/3854/6840/files/nidegekeninegopivigetid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6007/5427/files/58942138051.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2252/3288/files/79332496073.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/95093910750.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wotedosepano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9172/9309/files/autism_spectrum_disorders.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9174/5175/files/entrepreneurial_orientation_and_business_performance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5930/5880/files/12903865437.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0677/0843/files/lobotomy_corporation_ordeals.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9427/8293/files/73259236814.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kepudanunakadop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4383/1464/files/66737571435.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4749/3536/files/xedosoferinoj.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_off0000eb6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB6C 5484 bytes
SHA-256: 9fd9e04627b4d9b77b664910c07c1f463255bc9718eb07cca06638f5e6b4201f
font_01_sfnt_off0000fdff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDFF 11232 bytes
SHA-256: f45b2729e18b91a9dad475f282f1f913926afd27aa2c2c62f1db4d26541e2d96

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