Malicious PDF — malware analysis report

Static analysis result for SHA-256 8974fa312017c380…

MALICIOUS

PDF

57.7 KB Created: 2020-08-11 17:28:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e919de7334657d513dd947750ca73f90 SHA-1: 90ea8914a366f8c0c9d0c698913f08d5aa6da147 SHA-256: 8974fa312017c3803e9cba29fabc78bb088e36cfb1cf23d104abe77999d6af6f
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which are hosted on Shopify and appear to be part of a link farm designed to attract search engine traffic. A critical heuristic identified a link to a known malicious redirector, 'ttraff.cc', which is likely the primary malicious payload delivery mechanism. The ML classifier strongly supports the malicious verdict.

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.cc/pify?keyword=ashrae+comfort+chart+pdf In PDF document text
    • http://files.yajindustries.com/uploads/1/3/2/7/132740564/67a532859.pdfIn PDF document text
    • http://natesu.afiniadentalportal.com/uploads/1/3/0/7/130740434/tevujaniwid_mupebelosuromiz_xirus_tutugigexovin.pdfIn PDF document text
    • http://files.framemysore.org/uploads/1/3/1/3/131384789/7349004.pdfIn PDF document text
    • http://files.lifestylefitness.club/uploads/1/3/1/4/131407135/kufelododigadif.pdfIn PDF document text
    • http://files.wellnessbyannie.com/uploads/1/3/0/7/130740318/bixes.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7443/7791/files/85652776029.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3692/6374/files/30324965459.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4916/4705/files/46181970634.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0371/5489/files/livre_d_orthographe_franais.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2794/6904/files/35125122123.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0098/7801/files/89394578338.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2391/7478/files/73180457830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1924/7514/files/61835373813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4043/9446/files/37311948713.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5858/4986/files/aulas_de_ingles_portugues.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3092/0871/files/joindre_plusieurs_en_1.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_off0000964d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x964D 4984 bytes
SHA-256: 5498afcd40faa1ea172e2094552218a992d117ee3eb5ad800ee02593621840ba
font_01_sfnt_off0000a733.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA733 10556 bytes
SHA-256: e21b0f21f19d3bc0d6738fb588b27e330495fb7b9f8d7737314af847a29de077
font_02_sfnt_off0000cb60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB60 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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