Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c42ec168bf465b7…

MALICIOUS

PDF

44.3 KB Created: 2020-08-15 01:46:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3f75fe0e718c04c79f0ca6e96af99423 SHA-1: 808981891a1101c2e648884a0ece1c34b0cef79f SHA-256: 8c42ec168bf465b73236d1c6ce3e211d93ca0d27736d3a8fe4ed11984b263eba
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, disguised as a kindergarten curriculum guide. This redirector likely leads to a malicious payload or phishing page. The document also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or distribution mechanism. No scripts were extracted, but the PDF structure and embedded links strongly indicate a social engineering attack.

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=kindergarten+curriculum+guide+2017 In PDF document text
    • http://files.hazletontrinityschool.com/uploads/1/3/2/3/132303010/88c7835e7e.pdfIn PDF document text
    • http://finid.sallykral.com/uploads/1/3/2/3/132303382/7509791.pdfIn PDF document text
    • http://files.cozywritersroom.com/uploads/1/3/1/8/131872032/lesiniwutuvefepale.pdfIn PDF document text
    • http://reritite.boracaynewcoastph.com/uploads/1/3/0/8/130874493/c060dc86.pdfIn PDF document text
    • http://files.stjohnlutheranchurchjenison.org/uploads/1/3/1/4/131456012/menikoxotakibad.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/1/0427/9903/8631/files/ritatekukedupiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7945/7173/files/62953109991.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3337/9484/files/11296733512.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9422/8630/files/laketarigos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2776/7206/files/stay_hungry_stay_foolish_full_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4227/5485/files/xuwukabefidejas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6673/7311/files/las_carceles_que_elegimos_doris_lessing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7729/5516/files/siwaduje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/2953/9485/files/include_bleed_in_indesign.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7829/5450/files/41851984417.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006163.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6163 3080 bytes
SHA-256: 3b6c3edccbbdf68622c80e44ac099bd4bffa00507f4f1bc839f0bdbf087aa810
font_01_sfnt_off00006c6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C6D 5456 bytes
SHA-256: 6c073ae6c2c9ad896999a7759afac735823ab38e7105cf50e9da580fd16b5abe
font_02_sfnt_off00007eea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EEA 10888 bytes
SHA-256: f06244f0cb789c129d99dd8c5803818a45ad9fa4f32c50976b90f7ae900244cb

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