Malicious PDF — malware analysis report

Static analysis result for SHA-256 1595cd6998974af8…

MALICIOUS

PDF

32.9 KB Created: 2020-08-18 23:25:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: eaf1325a4fdfc4713dea4b268f46f5e9 SHA-1: 37fb533f33fe57805a890e8e76039e521ecc44df SHA-256: 1595cd6998974af85670e9b481f48d3550a8de4cda9cde970c15250de8ec968c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links and a link farm designed for SEO manipulation. The embedded content, though heavily obfuscated, includes a URL that points to a known malicious redirector. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for phishing or malware distribution.

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=flying+without+wings+piano+sheet In PDF document text
    • http://sebibata.northcobbphotoclub.com/uploads/1/3/2/6/132696056/wuxunipeto.pdfIn PDF document text
    • http://files.artpourparties.com/uploads/1/3/1/3/131384113/mekoxok.pdfIn PDF document text
    • http://nukufo.olddutchflavor.com/uploads/1/3/1/3/131381428/fugenubazexe.pdfIn PDF document text
    • http://files.billsnydersfire.com/uploads/1/3/2/6/132695492/tarefekotemamagowiv.pdfIn PDF document text
    • http://files.redbloomyoga.com/uploads/1/3/2/3/132303219/tudojubusibolus.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/1/0434/0023/3112/files/kekaxobudipunimipoxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6127/8885/files/blob._io_mod_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5590/6970/files/mibivofosemijipawetolozov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6640/6550/files/91131483872.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3191/0821/files/44499744250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2554/6912/files/buwibevolakebutuliba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5820/8672/files/alexis_texas_massage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/gegaxudanifox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7077/4679/files/canadian_economic_history.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4188/1254/files/caballo_de_troya_4_jj_benitez.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 1

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_off00004377.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4377 5136 bytes
SHA-256: 85d41b8b6550fdea2aef34db5392f69efa6652b3d64a51b010662cea3fae88c7
font_01_sfnt_off00005508.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5508 9908 bytes
SHA-256: 342eec4db740336be600ba8c313f099e4e40789300ba7009f36899444e95206c

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