Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8e4dc48c004bb9c…

MALICIOUS

PDF

39.8 KB Created: 2020-08-15 00:45:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 30294a5268e4edcb5d9af251205c0e24 SHA-1: a670e7b1ed101f375177e25e2aba0914370172c8 SHA-256: a8e4dc48c004bb9c18a07cc0950fdecf67cebe56be78196e8007e358363756ec
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document was flagged as malicious by a machine learning classifier and contains numerous embedded links. One critical heuristic identified a PDF link to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=bc+fishing+reports+saltwater'. Another critical heuristic indicated a PDF link farm, with many links pointing to shopify.com domains, suggesting an attempt to obscure the final malicious destination. The document body contains garbled text but includes the suspicious URL and several shopify.com URLs.

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/pify?keyword=bc+fishing+reports+saltwater In PDF document text
    • http://files.nashvilleweaverwedding.com/uploads/1/3/1/0/131070374/biredap.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/1/0431/3900/6632/files/60939154485.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6356/5727/files/19507881136.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6274/7545/files/wetuvakimisejip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0944/1953/files/tufebadozo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1142/3902/files/73213201160.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6669/3534/files/administracion_de_recursos_humanos_idalberto_chiavenato_descargar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0947/2669/files/communication_skills_games_for_students.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5782/4419/files/33953915614.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6113/2968/files/ashrae_hvac_2020_fundamentals_handbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6719/4021/files/32807815430.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_off00005ea6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA6 5420 bytes
SHA-256: c94a0d5733e894caac169fae5a5e92cff62bd7d47bb054b8a6495e9df3fc5cde
font_01_sfnt_off00007116.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7116 9848 bytes
SHA-256: d767213c93e6a87244d90e6bb90b4742810b0fab556950864d5ad4701fd3ab21

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