Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c292ddd0b0cd12f…

MALICIOUS

PDF

45.1 KB Created: 2020-08-05 08:41:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 57a8532ca87eb67526ddcfacc821a771 SHA-1: b7b681b57e062c52adc8250bf5e270c1433c4de6 SHA-256: 8c292ddd0b0cd12f6f30d3fabbeab215a3bdcc381fe7e3786a10935f3ac43ab4
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates a link to known malicious redirector infrastructure, specifically 'https://ttraff.cc/pify?keyword=caracteristicas+de+la+reaccion+antigeno+anticuerpo+pdf'. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution. The presence of numerous other links, including to Shopify domains, further supports the 'link farm' heuristic, indicating an attempt to manipulate search engine results or distribute content widely.

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+de+la+reaccion+antigeno+anticuerpo+pdf In PDF document text
    • http://files.juiceboxcafe.com/uploads/1/3/0/8/130814076/91b183f90be.pdfIn PDF document text
    • http://files.deborahshulmanmsw.com/uploads/1/3/1/3/131398253/aecb0d5.pdfIn PDF document text
    • http://files.ketowithgrace.com/uploads/1/3/1/4/131406930/1018017.pdfIn PDF document text
    • http://files.rebeccalynnphotography.net/uploads/1/3/0/8/130874518/4840188.pdfIn PDF document text
    • http://files.dedunlop.com/uploads/1/3/0/7/130775997/5111209.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/1/0432/9714/4990/files/84968723827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5608/6696/files/11077454364.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2508/8168/files/zamatuzeva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9065/7951/files/gizege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7016/0032/files/78296179757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7092/2652/files/90285108792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9567/8359/files/5232346204.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6363/1272/files/tadofatoxuzidoveluriwibum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8362/0757/files/82392978908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98223768302.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_off00006eae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EAE 5228 bytes
SHA-256: a86855a0096b5d2460e157b874c771be8ef767ad41efbd8e35051e9030079a58
font_01_sfnt_off00008081.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8081 11364 bytes
SHA-256: 4e35eabc2c51d5c5a20f22c2ab14dd49130e53fe1651c11c912e57504f158cdb

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