Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ca5cedea4217e4e…

MALICIOUS

PDF

63.6 KB Created: 2020-08-22 02:52:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b7884491609043b046d9e70347655e89 SHA-1: 1800280876ec35641d83e0159433f6f6844d2602 SHA-256: 5ca5cedea4217e4ef89d2db2c9d2fb2d5967986c42387ec85c660a234b937d7a
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, pointing to a known malicious redirector URL. The document body, though heavily obfuscated, contains the same redirector URL, suggesting an attempt to lure users to a malicious site. The ML classifier also strongly flagged this PDF as malicious.

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.ru/pify?keyword=catalogo+de+tornillos+y+tuercas+pdf+colombia In PDF document text
    • http://files.bridgewaterdairy.com/uploads/1/3/1/4/131438079/66540c5.pdfIn PDF document text
    • http://files.pact-ottawa.org/uploads/1/3/1/8/131857983/jotina.pdfIn PDF document text
    • http://files.theredbarnpizza.com/uploads/1/3/0/9/130969057/7144c9e.pdfIn PDF document text
    • http://gedix.toledopresbyterian.com/uploads/1/3/1/4/131409236/7573600.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0910/6332/files/bavomafapemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5294/9913/files/jimodipipirajivojubulome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3776/9383/files/check_mark_emoji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1637/9816/files/lirepejexoweferor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1058/0903/files/zaregovapumilunanilosav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6595/6760/files/62444758932.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7536/2198/files/mesepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3951/4006/files/gedibitetegewetexafe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5922/4480/files/insanity_workout_calendar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3014/2363/files/77316898743.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0382/2755/files/kudanumuzas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7870/3518/files/58464227946.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9802/9733/files/devusosanupefuzo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a8ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8ED 5620 bytes
SHA-256: 04063bac794cce12369bd50b3f72530528c9aa596128ca2656845d85a354606a
font_01_sfnt_off0000bbf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBF6 11328 bytes
SHA-256: c79b52c72ce32933f9d3b5fe9844d868d88b401542c29b0637a0de8106dd350c
font_02_sfnt_off0000e0dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0DC 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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