Malicious PDF — malware analysis report

Static analysis result for SHA-256 2de73fe640f9d258…

MALICIOUS

PDF

42.3 KB Created: 2020-08-16 18:45:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 87c3c695fd987b50af8a1de2d62c8406 SHA-1: 05b97a84c7627bd01c63f70a4c12671ebe456aa6 SHA-256: 2de73fe640f9d25837ae5d34a3170b547174d885bd478697fc33a39bcfed0e84
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=free+printable+writing+worksheets+for+middle+school'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many of which point to Shopify domains. The document body, though partially corrupted, also contains the primary malicious URL and several benign-looking Shopify URLs, suggesting a lure to disguise malicious redirection. The file's purpose appears to be directing users to malicious infrastructure under the guise of providing free educational resources.

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=free+printable+writing+worksheets+for+middle+school In PDF document text
    • http://xaxepero.mrgunsplace.com/uploads/1/3/2/8/132814930/lapaxaxagow_vowogir_xujoko_jaduj.pdfIn PDF document text
    • http://files.angiecoyle.com/uploads/1/3/1/6/131606169/0329169d16a2.pdfIn PDF document text
    • http://files.martialhartamas.com/uploads/1/3/0/8/130814279/6186ec0be38b.pdfIn PDF document text
    • http://files.erinburns.com/uploads/1/3/1/4/131414561/9299382.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/1/0434/8208/7576/files/xero_accounting_software_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0622/9654/files/xolisolojilurig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7994/0761/files/jisawowidubax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4416/7064/files/kusolekeputulusemetikukis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5829/1093/files/81790735380.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9765/1352/files/4119435314.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4817/9611/files/nizigavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0580/4698/files/rubazasireluzorifeburur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9735/6443/files/49cc_scooter_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0390/3127/files/13116339584.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8749/5321/files/jopaponofopazafe.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 8

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_off00006694.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6694 5820 bytes
SHA-256: 22d49bb85268e28ea94174308a78c9b08da7816aa880b5228b2c51c6f80b6f1e
font_01_sfnt_off00007a42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A42 9980 bytes
SHA-256: 43189b2f2252f4956a3afe4baecf160bd23e4a65b5dca4cf329b8538444d77d8

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