Malicious PDF — malware analysis report

Static analysis result for SHA-256 6035cb6faa22eaa2…

MALICIOUS

PDF

41.0 KB Created: 2020-08-03 14:18:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 58efde219216cc7b364fb0c25439b868 SHA-1: 30a0db54ce0cd80dd84b369b1f947845606d804e SHA-256: 6035cb6faa22eaa2804f8429935b5849596ca1a2d39a391de7e20be7f7a120ac
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing indicating it points to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains URLs that are part of a link farm designed to appear as free downloads. This suggests a phishing or malware distribution scheme, likely initiated via spearphishing.

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=adn+polimerasa+pdf In PDF document text
    • http://files.alohavolleyball.com/uploads/1/3/0/8/130874588/1088443.pdfIn PDF document text
    • http://lited.omshantiyogaspain.com/uploads/1/3/1/3/131384281/bf292a463.pdfIn PDF document text
    • http://files.caricatureparties.com/uploads/1/3/0/8/130874480/xojatoloximane_zugokudabisaruw_jetizekov.pdfIn PDF document text
    • http://files.princetonmeadow.com/uploads/1/3/1/1/131164039/2fcb9074a2ee9.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/1/0430/5915/1009/files/sibisibutovobunikimum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2317/0710/files/control_big_sean_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2440/6933/files/gakizidirowagururudavawi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6427/0743/files/91497602851.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4356/1376/files/bozaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8764/3303/files/uninstall_git_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3446/0828/files/87549725663.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2511/1967/files/40029963503.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9898/1030/files/56443986731.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8803/5486/files/wukojufow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2762/0249/files/sizozajola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5556/2398/files/77210506056.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_off00006280.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6280 5176 bytes
SHA-256: e3a0940f13b6aad739e19341c06d79d5e506bc21302cd592a3340dd0916dcfc0
font_01_sfnt_off00007400.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7400 10316 bytes
SHA-256: 8483bc0db407e897ee182c333f744d0ea8bed0931f677dfcdc31065035caa9be

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