Malicious PDF — malware analysis report

Static analysis result for SHA-256 6eccb8e53ec6cbbe…

MALICIOUS

PDF

45.3 KB Created: 2020-08-22 00:31:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 355867962c0be88be02787c385cbfaf6 SHA-1: e5ed667ff50c052fd21ff91111f4cf4c70c779e0 SHA-256: 6eccb8e53ec6cbbec8861a67179a62f1f1b699a29e6c6d5eaaba11042fc94d76
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 for a malicious redirector. The document body, though heavily obfuscated, contains a URL pointing to a redirector service that is also flagged by heuristics. This suggests the primary purpose is to redirect users to malicious infrastructure, likely for phishing or malware delivery.

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=cladogram+worksheet+middle+school In PDF document text
    • http://zibis.maaloufashford.com/uploads/1/3/1/3/131380651/a81dcebbb3.pdfIn PDF document text
    • http://files.spirehomeinspection.net/uploads/1/3/2/3/132302896/6fe07.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/1/0433/7886/8387/files/kid_birthday_invitation_templates_free_printable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mujunevuduw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3321/5654/files/24602843913.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3680/1184/files/22401229266.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/6490/6148/files/wozolutelujulixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7945/0272/files/absorcion_hierro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9961/1553/files/38245720427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1549/6092/files/kuvukub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5209/0022/files/xefaketupurewara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1870/6331/files/how_have_you_been_doing_lately_answer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/5607/4645/files/jobebiwemujafos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0357/6481/files/count_down_timer_javascript.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 2

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_off000073a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73A8 5416 bytes
SHA-256: a7172e860530b3ee6395e29e8223e650e85356356967ec50f485c040fad91f3d
font_01_sfnt_off000085fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85FC 9980 bytes
SHA-256: 74749b89f2316f6f42911a99d16d1228c4d3e9fda8d447fb35013b0ff7e000e3

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