Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fcff53546908357…

MALICIOUS

PDF

38.9 KB Created: 2020-08-20 00:03:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 75e704aeee75d0458c365daf844d9345 SHA-1: 5a29830c642f9b7dc4a613d650edb86369be150e SHA-256: 4fcff53546908357abd546a1e3636cf6859b1f6a301dcb044f6c6df6ce96a0d0
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of SEO link farming. One prominent link, 'https://ttraff.com/pify?keyword=coordinate+graphing+worksheets+4th+grade', is identified as a malicious redirector. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing.

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=coordinate+graphing+worksheets+4th+grade In PDF document text
    • http://files.centraljerseydyslexialearning.com/uploads/1/3/0/7/130740571/porunulegatapeji.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/1/0433/0595/9574/files/46991570533.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7017/6932/files/5143719644.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0708/1622/files/wwe_raw_theme_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9485/2252/files/26282293859.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9161/6153/files/1264911155.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8003/2160/files/33737173741.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6390/1334/files/99105347117.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1931/3062/files/77322400733.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5871/7087/files/a_dozen_a_day_book_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6079/6318/files/77380878595.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5301/4423/files/vugopavak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7780/3925/files/wivepewuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2926/4546/files/piwew.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_off00005a8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A8F 5336 bytes
SHA-256: e6675c0fc1ce70d6d1d4497f4877ba0d290467975e747211d801636910c7abf9
font_01_sfnt_off00006ccf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CCF 10024 bytes
SHA-256: f76218057445dfbb6ce859513a78c81ef8aae26d3d008ed01f5018ee1f4c5dc5

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