Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f59ca831b0a41ce…

MALICIOUS

PDF

35.9 KB Created: 2020-08-05 08:22:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 578b9db46d13f558fe714a1a0433fe3a SHA-1: 2477cd45fb6b1bed9d6c7f8fa3e598bc394449df SHA-256: 5f59ca831b0a41ce1cbc695718f25c39b2913cbc379d8646b7421eba34e32ccb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing campaign. The primary redirector URL is https://ttraff.com/pify?keyword=simple+past+tense+and+present+perfect+tense+exercises+pdf, which is flagged as malicious. The document body, though heavily obfuscated, contains this URL and other Shopify links, likely intended to appear as legitimate resources. The ML classifier strongly indicates 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=simple+past+tense+and+present+perfect+tense+exercises+pdf In PDF document text
    • http://files.lydiazervanos.com/uploads/1/3/2/6/132681536/e1046.pdfIn PDF document text
    • http://numepesub.bartjk.nl/uploads/1/3/2/6/132681504/4413479.pdfIn PDF document text
    • http://files.lephoartgallery.com/uploads/1/3/0/7/130740163/rarazubumonabebal.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/1/0437/1854/1480/files/cants_5_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6239/4008/files/29131200358.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4021/1105/files/jujepisinukelafaxikixelub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7301/1863/files/pvc_ceiling_panels_installation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7190/4673/files/4278305199.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6681/7689/files/79367546809.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4519/1841/files/19713689982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1585/6550/files/38624843610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8361/1801/files/92097711353.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2725/9811/files/fesotobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0015/8629/files/swag_code_generator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9282/6517/files/gipuxek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9280/3744/files/47549781570.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2477/6354/files/nabob.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 1

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_off00004e4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E4D 5472 bytes
SHA-256: 0d046f66dffebdc4191e630cef4c326cb1bca792051df35f89e0e15a59c0ab72
font_01_sfnt_off000060d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D3 9716 bytes
SHA-256: 9966bd32ed3792cb1f092a2b499d321d5733ee7e000419668881bfd136f90cb4

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