Malicious PDF — malware analysis report

Static analysis result for SHA-256 79ac342cf3d102d8…

MALICIOUS

PDF

42.5 KB Created: 2020-08-15 01:24:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e8c8a6a9ca250c5433387022d5af47aa SHA-1: 147f8ccc4b7a14d21eb5f15e3003eef806decddf SHA-256: 79ac342cf3d102d80fc28ad36c4e03a46e1babf0b0a142acf2fc780bdffcb0e4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links designed to create a link farm, with a primary redirector pointing to malicious infrastructure. The document body, though heavily obfuscated, contains the phrase 'breeding goldfish pdf' and a URL that matches the redirector, suggesting a lure for users to download content. The ML classifier strongly indicates maliciousness, and the presence of a redirector link confirms a malicious intent to lead users to harmful sites.

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.cc/wb?keyword=breeding%20goldfish%20pdf In PDF document text
    • http://files.sailingscribblingandcycling.com/uploads/1/3/2/6/132695351/6185203.pdfIn PDF document text
    • http://files.sidecloset.net/uploads/1/3/0/7/130776327/7e454d99f.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/1/0431/8615/9767/files/fanunowoxeloz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2041/8198/files/definition_de_l_apiculture.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8030/3270/files/96106890572.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3300/2145/files/wepedizozal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9944/6693/files/guxowasiraxilezu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2328/5928/files/99288726920.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3764/6245/files/xovinejebixinedam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0149/4179/files/business_goals_2_teacher_s_book_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7620/6238/files/rufavovuxekavekeva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9832/3609/files/melodurabisofubupuwosero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mejamuzeditika.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2815/8363/files/74086139690.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1410/2950/files/77004861914.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 3

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_off000069cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69CB 5144 bytes
SHA-256: 0a7994a1d61c8ca134426b84694361142ea36c9910a66e24ebbd8987394f210f
font_01_sfnt_off00007b45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B45 9932 bytes
SHA-256: e0ef0d1082866af3068c21f01e0e4bf4b209042269f3e588e56c1ad0b5ed44fd

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