Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e0a10dd7958e026…

MALICIOUS

PDF

43.2 KB Created: 2020-08-19 12:08:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b9d05d125fc6d0851dd33daea22818ce SHA-1: 934c64856e61e89e10904701a72f91b846f06e73 SHA-256: 3e0a10dd7958e026cc15dd63b013bd6faf928cfedfcd831832e4a2129fc2c75c
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is used to obscure the final malicious destination. The document body, though heavily obfuscated, contains the string 'Elementary algebra worksheets with answers' and the malicious URL, indicating a lure to disguise the malicious intent. No scripts were extracted from this sample.

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=elementary+algebra+worksheets+with+answers In PDF document text
    • http://files.kurtisestes.com/uploads/1/3/0/7/130776561/3609238.pdfIn PDF document text
    • http://files.chna18.org/uploads/1/3/0/7/130775653/nilitujuje.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/1/0438/6163/9318/files/dekanotonojo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2571/0750/files/82526960142.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5542/4423/files/memorial_service_template_editable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4764/1511/files/36449286725.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6109/2245/files/sebaxegitam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7703/4399/files/sexikibad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7077/4693/files/remudobuvag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5199/1719/files/42609262259.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5462/9015/files/41774510720.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7237/3411/files/46781235567.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/mibaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7812/3674/files/61884695182.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sosivizugepu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3305/0779/files/52983573214.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3051/1779/files/76925795732.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_off00006b18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B18 5452 bytes
SHA-256: 97e7c2822a808cc6a69dbc962a7a2ab6d3d350e0aebf723d2dfb8900f4d9d4e1
font_01_sfnt_off00007d93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D93 9956 bytes
SHA-256: 6bd8c82f92e8238a5939e1f4579493bd1f822f094b946091454beaf7b5117a0a

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