Malicious PDF — malware analysis report

Static analysis result for SHA-256 196a963ced861a3a…

MALICIOUS

PDF

30.5 KB Created: 2020-09-16 23:03:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1c579db6e097eaa0db30ae7364f9bd76 SHA-1: 3a3632533b8666d725420252b1255773720ceda7 SHA-256: 196a963ced861a3ab55596768139e1afb245bd642ed4cee753f57ae6bf4fd373
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded links, many of which point to a redirector service (ttraff.me) that is known to host malicious content. The heuristic firings indicate this is a link farm designed for SEO poisoning, likely to trick users into downloading malware. No scripts were extracted, but the presence of malicious redirector links strongly suggests an attempt to deliver a secondary payload.

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.me/wix?keyword=corridos+alterados+download In PDF document text
    • http://files.laurileesgolf.com/uploads/1/3/1/8/131857270/2504096.pdfIn PDF document text
    • http://files.pristineautowrap.com/uploads/1/3/1/8/131856877/2469611.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/1/0432/7935/1968/files/61701312995.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3983/4780/files/employment_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4066/7808/files/43971499014.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7784/3609/files/capital_alphabet_writing_practice_sheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1175/1588/files/tonefifemuvabedawog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2717/7380/files/putawipuwifipevo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2938/1791/files/tavimekosojoxokebatujidot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4621/3544/files/zibusasejepoforeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/3572/1634/files/hepatic_abscess_guidelines_2017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5677/5839/files/19921869554.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_off00003e86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3E86 4816 bytes
SHA-256: 90df99c07bc3145eb34e503d426534ae8831566c5331af88e5af2e09bd8c6455
font_01_sfnt_off00004efb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EFB 9116 bytes
SHA-256: 67ae9a7f3041342d900aaf63f4ee08c2917cc7b5361203b70695abe381957fec

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