Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9e1906cd657c02c…

MALICIOUS

PDF

53.0 KB Created: 2020-08-23 11:04:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4f672dd33ddbbb9cf5177001ef6b6065 SHA-1: 2c113d240c281157572be35054e2663cd80ec2ea SHA-256: d9e1906cd657c02c9f8b8f40664a19e645b9ea959afd59d58595aa30b2732810
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, with a critical heuristic firing for a malicious redirector link. Another critical heuristic indicates a PDF link farm, suggesting an attempt to manipulate search engine results or distribute malicious content. The presence of a malicious redirector URL and numerous external links points towards a campaign leveraging SEO manipulation or deceptive content delivery.

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=asma+gina+2018+pdf+espa%25C3%25B1ol In PDF document text
    • http://favuvajan.lovedxluna.com/uploads/1/3/1/6/131636725/4858043.pdfIn PDF document text
    • http://files.rauwhiro.com/uploads/1/3/1/1/131163841/9c93101a8.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/1/0428/9835/8432/files/titigabibuzumazavuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8518/5702/files/bugipomotosotumem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/1949/6606/files/coachmen_rv_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6666/1791/files/36855272122.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5177/8202/files/6718768405.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1544/4379/files/toefl_test_preparation_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1829/7245/files/26940039676.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6680/9765/files/etymology_dictionary_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8772/2648/files/john_deere_440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/3126/6215/files/21448847237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4469/2383/files/advanced_accounting_joint_venture.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9279/4774/files/68818845941.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_off00008ecc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ECC 5984 bytes
SHA-256: 8ffa5c6cec7da915b0815e05ccdb8b83f0e8039135ca005d498f045891f33347
font_01_sfnt_off0000a2da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2DA 10260 bytes
SHA-256: c04866ddb18b05517de1e45148ca5495945fbbf0eb4a48b91e8d5a96b36d1cb2

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