Malicious PDF — malware analysis report

Static analysis result for SHA-256 d388d5389ea51049…

MALICIOUS

PDF

41.3 KB Created: 2020-08-27 15:13:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 40d6aea00ca616dcf0f6680eb13626a5 SHA-1: c2c8f49f8ba719ca1c5f2a0ea2e92db5be16c4b3 SHA-256: d388d5389ea5104915588e4b6f471c2a9b80e2e247d888dff2e6f8100d252026
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to shopify.com domains hosting PDF files, likely as part of an SEO link farm. One critical heuristic firing indicates a direct link to a known malicious redirector at 'https://ttraff.com/pify?keyword=brendan+brazier+book+pdf'. This suggests the document's primary purpose is to redirect users to malicious infrastructure, potentially 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=brendan+brazier+book+pdf In PDF document text
    • http://files.naughtybody.net/uploads/1/3/1/6/131606454/libixu_lerakilatipozuk_luvexidisapa_repikikitijul.pdfIn PDF document text
    • http://files.headwatersnextstep.com/uploads/1/3/2/7/132710661/nunovi.pdfIn PDF document text
    • http://watok.artisanhandfood.com/uploads/1/3/2/7/132712336/jetuliwamebu_jevotojig_naxuposa.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/1/0432/4913/9880/files/rarefetaxiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5008/2202/files/wadirapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9620/3679/files/umberto_eco_apocalpticos_e_integrados.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5561/8977/files/97015510047.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0954/0257/files/past_simple_and_past_continuous_activity.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5597/0454/files/aneurisma_de_aorta_abdominal_diagnostico.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5505/4999/files/baixar_creator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6335/3250/files/learning_javascript_design_patterns_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8486/4917/files/5399067071.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2958/4282/files/78920673230.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/25668779603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3937/5012/files/bittorrent_vpn_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5626/5376/files/bollywood_actress_wallpaper_hd.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_off0000642c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x642C 5128 bytes
SHA-256: 77874f10ed487c5cc407c6062fd61bcf6332e50dccdfe0de45a2bbde5f0fc6f1
font_01_sfnt_off000075b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75B8 10236 bytes
SHA-256: ba12001f6249f6df5903f36207068f7a9c07562a821984153ab2bf4c4e523da0

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