Malicious PDF — malware analysis report

Static analysis result for SHA-256 33e4472bc3cfdbdb…

MALICIOUS

PDF

45.4 KB Created: 2020-08-11 15:57:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9252c760e719765bbc7e291fd82e7694 SHA-1: 7303f00ae6bed800b85b9d34b98cb2f1d342bb9c SHA-256: 33e4472bc3cfdbdb12ff55515bb00c20a6d692b5d51c1cab7f036b0e75bff5e7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one to `ttraff.com`, which is flagged as a malicious redirector. The document body and embedded links suggest a lure for a free PDF download, likely a phishing or scam attempt. The ML classifier also strongly indicated maliciousness.

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=beginning+xcode+swift+3+edition+pdf In PDF document text
    • http://jivudor.geoprogrammes.com/uploads/1/3/0/9/130969744/55130.pdfIn PDF document text
    • http://files.jeanpierrebanville.com/uploads/1/3/0/7/130776204/b8928944ce.pdfIn PDF document text
    • http://files.changethenarrative.net/uploads/1/3/0/7/130739232/kederam-bezodel-pixupon-zezekabilimofow.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/1/0430/1540/5725/files/33556258517.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0305/1171/files/nufozapanopimef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1551/0938/files/libro_de_canciones_infantiles_para_imprimir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6572/9429/files/ridadipijujubutupuma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5317/9289/files/86310620830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9910/3136/files/xodawenolugedaguzeke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1977/9742/files/kekobelufila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5698/0377/files/59557071204.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2566/9028/files/kozakebadefokifinu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8450/5498/files/47734996221.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4433/8838/files/14197123530.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 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006664.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6664 5356 bytes
SHA-256: cbb67183ab97cb7fb3d399ef5015122723729acba056d1d9ab3be8a0c2acc062
font_01_sfnt_off000078cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78CC 2744 bytes
SHA-256: cb03acd017500927988b7e50e495582682f6c23237ddc20251056c6592ca1707
font_02_sfnt_off00008478.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8478 10420 bytes
SHA-256: 5fb87d92b4dd1ef1f9fa36584eaa619bd2fb1894653232c2a22ca59d53ba05d1

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