Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e7a5a3d2245db63…

MALICIOUS

PDF

42.4 KB Created: 2020-08-03 15:50:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d89c8d4502ab54273061d4df00bd5561 SHA-1: e168b1c1615786ff77b279b05dca34edcad2b5a2 SHA-256: 5e7a5a3d2245db632bbc55863c1adf377cc8a6e2bee5bb86ba733d4003226e08
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external resources, with a critical heuristic firing indicating a redirector to a known malicious domain. The document body, though heavily obfuscated, contains the same malicious URL, suggesting a phishing or scam attempt disguised as a free download. The presence of numerous PDF links points to a link farm strategy to obscure the final malicious destination.

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=biometria+hematica+valores+pdf In PDF document text
    • http://files.immaculateconceptionstmarys.com/uploads/1/3/2/7/132740633/9d800.pdfIn PDF document text
    • http://files.rlcraftvinylstore.com/uploads/1/3/2/6/132695915/ruzefefakekebo-begulo-degexopuzefiwi.pdfIn PDF document text
    • http://files.tziporahheller.com/uploads/1/3/2/6/132695919/6948856.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/1/0437/7313/2957/files/safari_clip_arts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5717/6986/files/45553090025.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3461/5708/files/pebudebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/16175378270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2102/3904/files/how_do_i_download_spss_for_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8999/3636/files/gujadizopedixovazon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6350/9143/files/durenixatox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6871/8242/files/recursive_binary_search_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4647/6708/files/kolezemofuto.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_off00006769.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6769 5504 bytes
SHA-256: c4b4eb38330be6f74a4ae8c66cf22f705cdef91522bfe5eeba61b6828c39c49f
font_01_sfnt_off000079fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79FC 10284 bytes
SHA-256: b90991c7ca39a20ab89b9f0253408a8b378b52992a2915a4601775e70b8c2898

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