Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7fa4690e3208243…

MALICIOUS

PDF

43.2 KB Created: 2020-08-04 02:27:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7329d06211beb9f9e74114ca806386b6 SHA-1: 87a25a7a09236fc823651a1ed5557d853bd5beed SHA-256: f7fa4690e3208243a208eeeff3700d8e5ba788dc4bb7e1f37b6400e736768a8c
194 Risk Score

Malware Insights

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

The PDF file contains a link farm designed to appear as a free download for a medical PDF. The primary link, https://ttraff.com/pify?keyword=atlas+of+amputations+and+limb+deficiencies+pdf+free+download, is identified as a malicious redirector. This suggests the document's purpose is to redirect users to malicious infrastructure, likely for further exploitation or malware delivery. 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=atlas+of+amputations+and+limb+deficiencies+pdf+free+download In PDF document text
    • http://files.angcwestpotomac.com/uploads/1/3/1/4/131413718/de9ac.pdfIn PDF document text
    • http://files.omlalawyers.com/uploads/1/3/0/7/130776120/kekine.pdfIn PDF document text
    • http://files.tradewatercandles.com/uploads/1/3/1/3/131381675/e00cb17966.pdfIn PDF document text
    • http://files.linnmastergardeners.com/uploads/1/3/1/3/131383747/1634272821.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/1/0440/1712/3486/files/84286832964.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0908/0477/files/67434059143.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8616/7702/files/xoberug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8799/5814/files/mugisovofeduwituxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3840/7845/files/equidad_de_genero_en_el_ambito_laboral_en_mexico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3651/6250/files/rarulokiboxapatemujulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9672/7957/files/voderubaxuregotilazuguv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/duwaxufezemurogagur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7055/3238/files/namofomiveropoladosotej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1184/8861/files/arduino_ide_datasheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8492/3555/files/patidasedepawera.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3052/5590/files/siwupapatos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3123/2674/files/27527363896.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_off00006932.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6932 5520 bytes
SHA-256: c15732e74dbba05655f1f62800756773eba5cf6da7387821c30f8a62082238af
font_01_sfnt_off00007bef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BEF 10204 bytes
SHA-256: c5b9b36334181e5931eb12945246c2739cbeda4b11b469025a1eb300501b7b0e

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