Malicious PDF — malware analysis report

Static analysis result for SHA-256 20d174e2c1339cf5…

MALICIOUS

PDF

45.5 KB Created: 2020-08-06 11:41:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 249af5301d6c09dbea1bd00bde825011 SHA-1: 3b02621d86792cf3e1ce314b71cc9a7f5f934eed SHA-256: 20d174e2c1339cf575977f1de7103bdada9276e9015aa7ffed8304540cf61339
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, identified as a link farm. The primary malicious URL, 'https://ttraff.com/pify?keyword=estrous+cycle+in+cattle+pdf', is a known malicious redirector. This suggests the document's purpose is to lure users into clicking these links, leading them to potentially malicious websites for phishing or malware delivery. No scripts were extracted, but the PDF structure and link farm are strong indicators of malicious intent.

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=estrous+cycle+in+cattle+pdf In PDF document text
    • http://files.actadrian.com/uploads/1/3/0/8/130873914/jonune-vobavifado.pdfIn PDF document text
    • http://files.laparkcavaliers.com/uploads/1/3/1/4/131406391/f978cac65.pdfIn PDF document text
    • http://files.backdoortheatre.org/uploads/1/3/1/4/131454501/fonudusatikovitab.pdfIn PDF document text
    • http://files.dst777.org/uploads/1/3/0/7/130739024/a1cfbb2e6.pdfIn PDF document text
    • http://files.faithmeadowsfarms.com/uploads/1/3/1/1/131163761/1349666.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/1/0431/2619/4336/files/62782904420.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4782/8133/files/22229211559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4324/9563/files/12486070490.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3998/0711/files/radajiwanefigamiwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/petixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9613/7111/files/mufazibazeral.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2955/2552/files/52568214055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zugazad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/babasetaxoguvivowe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9339/2536/files/tolasugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3369/8209/files/kulunil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4743/5940/files/tiberakel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5817/5893/files/bafatumevefizevavu.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 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_off00007519.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7519 5208 bytes
SHA-256: 3d85bc7278efb562418af39dd6a4a5b247e1ee6e9e9a8645182eacbca2fa2d50
font_01_sfnt_off000086f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86F0 9972 bytes
SHA-256: c65f2e07ed0444638a1e06fea9f64041894cdd8e44143f061040034e72e9871c

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