Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9f7bffe57cbfcab…

MALICIOUS

PDF

42.2 KB Created: 2020-08-22 18:09:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 74445e3e2061e59336c57ff15d0a256b SHA-1: 18277b330df172bc792de84db3e8ca6af57bc843 SHA-256: d9f7bffe57cbfcabbe53f72a07412fb99bb26e2cd0aa84341ad646a7ab428679
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a lure related to an 'emotional support dog letter to landlord template'. It embeds multiple links, with one pointing to a known malicious redirector at 'https://ttraff.com/pify?keyword=emotional+support+dog+letter+to+landlord+template'. The PDF also contains a large number of links to Shopify-hosted PDFs, suggesting a link farm for SEO poisoning or to obscure the malicious redirector. No scripts were extracted, but the primary malicious activity appears to be redirecting users to a harmful site.

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=emotional+support+dog+letter+to+landlord+template In PDF document text
    • http://files.universalengravers.ca/uploads/1/3/1/6/131636855/07c679e0c3c82e.pdfIn PDF document text
    • http://kerum.minxiejewelry.com/uploads/1/3/1/3/131384362/bozuwidituki.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/1/0440/8259/3957/files/53463404357.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2668/5850/files/podoligob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0742/6216/files/real_world_inequality_word_problems_worksheet.pdfIn PDF document text
    • http://mebamama.mildredspantry.square.site/uploads/1/3/1/8/131856827/1b936a9fd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6700/6364/files/vedujumebutimule.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5883/0229/files/size_of_dictionary_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/31587178383.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9910/9016/files/67863670721.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8030/3270/files/mapirokejevupeki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7664/0156/files/minecraft_tinker_construct.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/2317/2503/files/walofasogodugebus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1479/9012/files/76946179357.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6512/1695/files/marathi_calendar_june_2020.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 2

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_off000066e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66E9 5236 bytes
SHA-256: d436222cba7f4f5b0deae27af0a23bcb47eb6e26e7cba523e9594b2c6f35ab95
font_01_sfnt_off00007896.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7896 10384 bytes
SHA-256: 6193c853016e620481ca9db29d6de1d6a5e9bd8b72bb185a076abe0b1e78e9cc

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