Malicious PDF — malware analysis report

Static analysis result for SHA-256 e11707f12781723d…

MALICIOUS

PDF

38.5 KB Created: 2020-08-23 01:39:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1f343e116c47b534a57a73a5419c13ec SHA-1: 6aab4968b2520a91c62e9dd9a5a5c402ec389e27 SHA-256: e11707f12781723dfee3efee4609487d6848b6d09a21c40a9f248fa92d2b498c
202 Risk Score

Malware Insights

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

The PDF file contains a lure related to a 'Nafta certificate of origin form' and embeds a large number of external links, including one pointing to known malicious redirector infrastructure. The primary heuristic indicates the PDF links to a malicious redirector, and another heuristic identifies it as a link farm. The embedded links likely serve to direct the user to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=nafta+certificate+of+origin+form In PDF document text
    • http://files.foundationfirsthorsemanship.com/uploads/1/3/1/3/131380786/2957154.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/1/0428/3482/1287/files/42694377856.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/47475247643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0686/8131/files/apply_patch_git.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/7576/8221/files/pip_application_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9062/5191/files/67637352171.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/33597072232.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3220/5722/files/91362290853.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2452/3170/files/climate_zones_usa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9833/9496/files/32337911726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0106/9220/files/calendario_biodinamico_2020_colombia.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 5

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_off00005948.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5948 4960 bytes
SHA-256: 1b3deede7cbff6b32b3a4faeb138210b3f207432f7165b0ca96613754122fbf6
font_01_sfnt_off00006a18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A18 10324 bytes
SHA-256: 43e4c2c88a69bb3c1d9f0166798ffae50d3cca2da606f0d75754fa47ea9ff32a

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