Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a6d32fae4a95d69…

MALICIOUS

PDF

44.9 KB Created: 2020-08-06 16:11:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d4ccf6359f96043d02db9c33bc5fe90d SHA-1: 2e6422db4e2524825fb4611f6339d506d8182fa2 SHA-256: 9a6d32fae4a95d6987bab3dd91bd3e870f8007243bad101a3e4de1b29452db52
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically a redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'building construction book download pdf', suggesting a lure. The ML classifier strongly indicated maliciousness, and the PDF structure itself was flagged for containing a mass external link farm, further supporting the malicious intent.

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=building+construction+book+download+pdf In PDF document text
    • http://files.petertinaglia.com/uploads/1/3/1/6/131606876/dokiz.pdfIn PDF document text
    • http://files.cozykidsembroidery.com/uploads/1/3/1/4/131409170/ninebafakafekip.pdfIn PDF document text
    • http://files.thememphisjewel.com/uploads/1/3/1/8/131857540/1167312.pdfIn PDF document text
    • http://files.lomaryard.com/uploads/1/3/1/0/131070045/1050846.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/1/0439/5106/3195/files/zafawukifafifikixubel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1741/8405/files/how_many_hours_have_i_played_league.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6811/3574/files/lurujagiva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1780/3675/files/91665505599.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8311/1323/files/75304037093.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5107/4214/files/wuwuto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5759/4011/files/surunorilokitofibemefevo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5265/5002/files/bulowojakipuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1826/4469/files/xowiru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6330/3575/files/40246016273.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3220/5722/files/17824893944.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/58585016777.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_off000066f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66F4 5668 bytes
SHA-256: 70862933b862e348014909b399ea63ae2f94b599e9fd10743371c1df397af409
font_01_sfnt_off00007a66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A66 14176 bytes
SHA-256: a59a95d7075ee4b028c4a4489c71a4dd3c16678fdff02ef3e51f18f8df355811

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