Malicious PDF — malware analysis report

Static analysis result for SHA-256 71bc7d468f2b7e39…

MALICIOUS

PDF

45.9 KB Created: 2020-08-08 15:17:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b390d22959d77570027836fc339a3b0e SHA-1: 55dda32f2ff9d07b9cf974ddf9e6dbe6e8da10f1 SHA-256: 71bc7d468f2b7e397432e2ee2a187d8bc54327a8d1d351d1f1de7dece013fe08
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to Shopify domains hosting PDF files, likely as part of an SEO link farm. A critical heuristic identified a link to a known malicious redirector, ttraff.com, which is also present in the document body. This suggests the document is designed to redirect users to malicious infrastructure under the guise of providing downloadable content.

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=phonics+worksheets+pdf+uk In PDF document text
    • http://files.uilmusicregion12.com/uploads/1/3/2/6/132682585/1394178.pdfIn PDF document text
    • http://files.ericaevansartist.com/uploads/1/3/1/3/131398281/1197094.pdfIn PDF document text
    • http://files.friendsofpns.org/uploads/1/3/1/4/131455337/b0581.pdfIn PDF document text
    • http://juromibu.share-the-joy-orillia.ca/uploads/1/3/2/7/132740405/c0a4f2df8.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/1/0437/6074/6648/files/remove_watermark_adobe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4306/1913/files/47607564726.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5672/6170/files/37955718641.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89709194360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/0137/5912/files/download_ayyappa_bhajan_songs_in_telugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5341/6601/files/emerson_ovation_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2350/6336/files/wikamusimubepig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/descent_into_avernus_trove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6403/2422/files/5209847388.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5335/0055/files/panama_city_beach_water_temp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1154/7037/files/jibefuzatetotazowobub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8937/9993/files/sebawezi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3720/3364/files/d_d_champions_of_ruin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9332/7008/files/1780671505.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 6

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_off0000761d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x761D 5156 bytes
SHA-256: 893404a53743d82e7e5cfe1a5e4e8a4cc9ccf7e08b415599372084d44d6728a1
font_01_sfnt_off000087bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87BB 10196 bytes
SHA-256: 54a7df9bcb3b01366a6ed41d262c3f9b1730800eaf5f1f64fef1570eb14d4a50

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