Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d92c655a000b0a6…

MALICIOUS

PDF

36.9 KB Created: 2020-08-25 15:24:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 30e70ce6198a236cc99c8694ac64fdf8 SHA-1: 60c182141d1ea3f5af45b893a67a3b269e04684f SHA-256: 5d92c655a000b0a6883da4b851a45028b918fdfd898760b1f02e27653f316ddb
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 phishing or malware distribution campaign. The document body and embedded links use keywords like 'jolly phonics blending worksheets' to appear as legitimate educational content. The presence of embedded links and the ML classifier's high confidence score indicate malicious intent, likely to redirect users to malicious sites or download further payloads.

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=jolly+phonics+blending+worksheets In PDF document text
    • http://files.spiritwalk.info/uploads/1/3/1/4/131452935/3407478.pdfIn PDF document text
    • http://files.uturncapital.org/uploads/1/3/1/1/131163669/zetilarenetaf.pdfIn PDF document text
    • http://files.sweetprairiepickin.shop/uploads/1/3/1/3/131383586/0524120c39214e.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/1/0431/0204/4316/files/veguloj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1740/2530/files/83544399880.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6127/2995/files/midipolafep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0844/8922/files/authorization_letter_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0476/2011/files/xadulukisoso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4452/7511/files/luzozezofumafis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8613/5961/files/89430653769.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4147/8040/files/23806776607.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8538/9206/files/tifukorojobusazado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5187/6509/files/86411344936.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7430/4662/files/fiverr_gig_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5037/5070/files/hybridization_practice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0265/0011/files/zetokixibujozukojagowel.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_off000050d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50D3 5512 bytes
SHA-256: ff1266b25154a2cb349f7773fa0520689b960694bf7f6eca9db5e46e98ea0cae
font_01_sfnt_off00006393.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6393 10348 bytes
SHA-256: 24c2169f4e748dd1c08f7d507a6aa5cdd175ea681fa06f95a66bebd411e0da83

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