Malicious PDF — malware analysis report

Static analysis result for SHA-256 33e84c160564c42a…

MALICIOUS

PDF

57.6 KB Created: 2020-08-10 14:40:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 603485b4b88dc22fa2755607652b7155 SHA-1: 23a40a5fb733e5459ae04cece55e732bfce46b78 SHA-256: 33e84c160564c42a966567b2c9fd1120537131a7009bdd0b852d765880a8d95f
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting a phishing or scam attempt. The embedded URL `https://ttraff.com/pify?keyword=types+of+adjuvants+in+immunology+pdf` is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, reinforcing the lure to click on external links. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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=types+of+adjuvants+in+immunology+pdf In PDF document text
    • http://fazimuzad.jennyrmorrispwms.org/uploads/1/3/1/4/131406436/7400197.pdfIn PDF document text
    • http://files.susanarondon.com/uploads/1/3/1/0/131070367/wisutifa.pdfIn PDF document text
    • http://files.merionvillage.org/uploads/1/3/2/8/132814935/cb1d90.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/1/0431/1734/6965/files/37713398979.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9890/6528/files/axel_vervoordt_wabi_inspirations.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86593634255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/5170/0644/files/financial_econometrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4196/4710/files/xupuzejadojagipinevuvaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2715/9448/files/nenozadule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6364/7131/files/55698827337.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2919/8998/files/fudelezeteju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2014/7095/files/harbor_freight_horizontal_band_saw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8347/2802/files/bixojozupuzirirolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1615/7344/files/pptidos_y_enlace_peptdico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5555/4458/files/rifurawoke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2960/2205/files/volarilumefakubixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5537/2695/files/41653095798.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 6

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_off0000a080.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA080 5452 bytes
SHA-256: 4475e69363d93c23f201c7735e4e2826327dfcdced567d36f033e94b2ed4d08e
font_01_sfnt_off0000b317.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB317 11480 bytes
SHA-256: c50d828d313f5cf4bc7bc8d6b2e4af764b28b7064301225a7803a6f5ebfcd46f

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