Malicious PDF — malware analysis report

Static analysis result for SHA-256 28e1ba0e28c7acd2…

MALICIOUS

PDF

56.0 KB Created: 2020-08-14 14:20:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5cb5eed153f684d7c0ec132ff9299b9f SHA-1: fe67bb6e33636f63243d58aa9b9f42ce1195fe90 SHA-256: 28e1ba0e28c7acd251b792196edf20c5699c97443c0e83cabeabb74701c678cb
194 Risk Score

Malware Insights

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

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 also present in the document body. This indicates the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing.

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=eso+lore+book+guide+ps4 In PDF document text
    • http://lusotijo.sandstonecontracting.com/uploads/1/3/0/7/130776330/lasewebedosutod.pdfIn PDF document text
    • http://ritilon.brindleemountainanimalrescue.com/uploads/1/3/2/7/132741194/37df387250.pdfIn PDF document text
    • http://zuzexi.barry3d.com/uploads/1/3/0/8/130814328/jiseguluduzokoma.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/1/0429/9853/0202/files/40345674398.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1587/2423/files/jakudopatumokojaledigaze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9522/6523/files/gezesuxurad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6533/4165/files/61409692160.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8832/1438/files/fajibusuxikuvonin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3535/0424/files/citizen_eco_drive_manual_e650.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6436/0100/files/92644070792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7962/2040/files/campbell_8th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9739/0244/files/kewebebatukeruzofago.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1205/5463/files/85845231904.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0662/3903/files/53321635587.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3219/0876/files/robajizonipatazubojarebo.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_off0000912e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x912E 5164 bytes
SHA-256: f8bc629bdbd865445593f03a0a50b7b92608d1ac039e205c75275e7ae99129b7
font_01_sfnt_off0000a2d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2D5 15636 bytes
SHA-256: 8a332aa56cb433400c05e0179e36ea4b43f75d3b5a32201f600f10ac07c2f5f8

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