Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff05465079e2ba60…

MALICIOUS

PDF

40.3 KB Created: 2020-08-22 02:29:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b3eaffff352430319ed3a6e717cfbf90 SHA-1: 9dfd5508119ed9dd8449709169728d75e3c2ac9b SHA-256: ff05465079e2ba601ad4b88a058e36bf826eaddeacd6b190ffd5bcf999c8ceb9
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains multiple embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Aaa logo 2014' and references the wkhtmltopdf tool, suggesting a lure to download or view content. The presence of a link farm further indicates an attempt to distribute malicious content or drive traffic to malicious sites. No scripts were extracted, limiting the analysis of direct payload execution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=aaa+logo+2014+full+version+free In PDF document text
    • http://files.ekhaonline.org/uploads/1/3/0/7/130739949/afa525603d9324.pdfIn PDF document text
    • http://files.cariebertseminars.com/uploads/1/3/1/3/131379085/vekudemovoz.pdfIn PDF document text
    • http://files.berrienbaseball.com/uploads/1/3/1/1/131164431/7714943.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/1/0432/2256/5032/files/99282303285.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/5489/0913/files/furling_genoa_sheet_length.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4775/3640/files/bafadekomub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6454/0840/files/que_sera_sera_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1725/6605/files/curso_de_ingles_gratis_y_audio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0903/2863/files/40697675862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5666/7541/files/zirafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1548/8167/files/galapizawumirapikal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0158/5569/files/create_marksheet_in_excel.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 5

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_off0000604d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x604D 5396 bytes
SHA-256: 665400ff3116225dcc7abf15d882b0c1940def29994c9fe1aa9cbafbb947df7c
font_01_sfnt_off000072c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72C3 9892 bytes
SHA-256: fc4b95d1747256144f8a395b51d47c764ebb70eca3b7de6818eed7da8a77860f

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