Malicious PDF — malware analysis report

Static analysis result for SHA-256 330661cbdb7166a2…

MALICIOUS

PDF

41.0 KB Created: 2020-08-10 01:13:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 71a2818d87b486f40e9b5c5ebe54de5e SHA-1: cbbc465d375448c62dc7cdd29885e8e2e0152e5e SHA-256: 330661cbdb7166a2433b5a3d7bb45ac8961509df5962877af3a746e034bc1669
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to what appears to be a link farm designed for SEO manipulation. One prominent URL, https://ttraff.ru/pify?keyword=benefits+of+afforestation+pdf, is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to the same lure text and URLs, indicating an attempt to drive traffic to malicious infrastructure.

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.ru/pify?keyword=benefits+of+afforestation+pdf In PDF document text
    • http://nukigutor.supercami.com/uploads/1/3/0/7/130775403/8939433.pdfIn PDF document text
    • http://pefot.potss.co.uk/uploads/1/3/1/4/131483138/ccd771.pdfIn PDF document text
    • http://files.perthcommunitychoir.com/uploads/1/3/0/7/130775949/xalolaxifagi.pdfIn PDF document text
    • http://files.allgranitesarasota.com/uploads/1/3/1/3/131378776/zoxasutuvara.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/1/0430/9978/3319/files/66357167486.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/21800621301.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9906/2426/files/ximeloletosaxobafolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9416/3109/files/surasiluru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4704/9621/files/thoracic_epidural_anesthesia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4101/3412/files/folisegezisukalasabifi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9899/5864/files/29624096947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1685/5457/files/60334634665.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/48599272906.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2807/7992/files/91802139645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9911/2095/files/68582790340.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5281/7832/files/25021274888.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5720/1820/files/demifagufetojebin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5489/1161/files/ford_8n_parts.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_off0000659a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x659A 5052 bytes
SHA-256: c9ee064a2c53f68714fbf7202d22b48a0a202b0168151b74c5f61e7a99ad7842
font_01_sfnt_off000076dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76DD 9372 bytes
SHA-256: 162e48f9b061167fa84fd658e5a5ed94e346f797e576562f81b109dfb03118c7

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