Malicious PDF — malware analysis report

Static analysis result for SHA-256 85522a174b54b186…

MALICIOUS

PDF

65.4 KB Created: 2020-08-27 16:30:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9966c591e6cab39da982ce4d0336013c SHA-1: d5c6e6d4bb474d05336d3d26f17fce3c7447ddc3 SHA-256: 85522a174b54b1860c0a1ac8900b25014ee6e6ba07d4f902be658e9e7d36a020
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating it is a malicious redirector and part of an SEO link farm, designed to lure users to external sites. The embedded URL `https://ttraff.com/pify?keyword=patrones+de+conocimiento+de+barbara` is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this same URL, suggesting it is the primary lure. The presence of numerous PDF links, many pointing to Shopify, indicates an attempt to disguise malicious activity within a seemingly legitimate content distribution network.

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=patrones+de+conocimiento+de+barbara In PDF document text
    • http://files.citrusandmintdesigns.com/uploads/1/3/1/4/131453348/4722192.pdfIn PDF document text
    • http://levaf.definitivearts.net/uploads/1/3/2/6/132680981/fezujijuziwaxuz-jidajepisarira-fawij-xowitamenako.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/1/0436/8980/3941/files/zawizewebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7287/1832/files/4005164949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9528/4130/files/59627890454.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7818/9205/files/datakubuzolixuli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7828/7521/files/livojeti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8673/1681/files/pexilikuvesevozorigete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5921/6537/files/84577039546.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6811/9453/files/juruxelamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1592/0024/files/punusegowuroniru.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_off0000bfb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFB3 5192 bytes
SHA-256: 4c9ce933da6c6815796e956359a9e910918ec18c98d1d5ecb88e7bb6de8fbacf
font_01_sfnt_off0000d13b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD13B 11660 bytes
SHA-256: 5673afee674f068036a480a63be6afd7ab3b13f2c273956c2e95d50a0726dada

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