Malicious PDF — malware analysis report

Static analysis result for SHA-256 5be14b0c9fa2f521…

MALICIOUS

PDF

41.6 KB Created: 2020-08-21 06:22:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8c4fc13f7550f4ddf85092abba62f631 SHA-1: c9943864faaa2157dfe41d4589f82e6a8e1dbcc3 SHA-256: 5be14b0c9fa2f521fb113a4b6ae7b9897543c2e450f75d57dbd80bf8c18170a3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or SEO poisoning tactic to distribute malicious content. The primary redirector URL is identified as malicious. While no scripts were explicitly extracted, the PDF structure and embedded links strongly indicate an attempt to redirect users to malicious infrastructure, likely for phishing or malware distribution.

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.ru/pify?keyword=maths+graph+paper+template In PDF document text
    • http://files.gamestorereddeer.com/uploads/1/3/2/6/132681617/zilon.pdfIn PDF document text
    • http://vazogog.delislechiropractic.com/uploads/1/3/0/8/130814328/xipogoxulisobeg_zajofawupoki_bawuralono_valexidos.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/1/0444/0604/6886/files/multivariate_data_analysis_in_practice_esbensen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7184/0161/files/fmea_aiag_4th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8312/1319/files/intentional_fallacy_text.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6604/1244/files/fepokumurubaxima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8835/4211/files/disukesibemiri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5107/3174/files/free_song_careless_whisper_george_michael.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6859/6123/files/gozimujidajuxazenutoxopes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/genofanigonutajet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8001/5271/files/movimiento_rectilineo_uniformemente_retardado_wikipedia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8839/6959/files/koranarenurutivosajop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2158/9913/files/59642769099.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_off000065af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65AF 5240 bytes
SHA-256: 4c7506e42d9a4109e5c55d0888debf7f9d78b0a2a5d7985beb8bcdd019ec37b8
font_01_sfnt_off00007761.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7761 10088 bytes
SHA-256: 467d7c7e3acddf027621fb9fd309641d6c603a901d7e577e5d1b5ae4c306b6ac

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