Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3dca3cd79b40d97…

MALICIOUS

PDF

45.6 KB Created: 2020-08-13 23:48:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cdf2467125cf19662d33592bcadff812 SHA-1: 92a7b6b69fcac90f9cdbe6c82c6f881c9d2e7e87 SHA-256: c3dca3cd79b40d97ec3514fa03e62f429534b6d4f5d7aa04548b9a8c4ac1e525
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating it is a malicious redirector and part of an SEO link farm, designed to lure users to malicious sites. The primary redirector URL is https://ttraff.com/pify?keyword=working+capital+requirement+balance+sheet, which is linked to known malicious infrastructure. The document body, though heavily obfuscated, contains references to financial terms and URLs, reinforcing the phishing or scam lure.

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=working+capital+requirement+balance+sheet In PDF document text
    • http://files.cogsuite.net/uploads/1/3/1/4/131437508/98ee17408e5.pdfIn PDF document text
    • http://files.tgifteachersgetitfree.com/uploads/1/3/1/4/131406288/db92a091da.pdfIn PDF document text
    • http://files.kiamichcouncil.com/uploads/1/3/1/4/131437531/9dcaa9b.pdfIn PDF document text
    • http://files.pamelathibodeaux.com/uploads/1/3/1/4/131409200/0ed67a21df1.pdfIn PDF document text
    • http://files.laparisienneseattle.com/uploads/1/3/0/9/130969837/6273016.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/1/0444/1610/6663/files/magisterium_5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1937/0659/files/53139400619.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6340/2905/files/54311896357.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9853/6091/files/nomenclatura_de_disacaridos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4775/3640/files/10560073753.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7546/0515/files/acupuntura_para_bajar_de_peso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0319/9136/files/kewixoriduzekutetodug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9013/0584/files/citizen_calibre_8700_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8695/4140/files/anoreksia_nervosa_adalah.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006405.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6405 5572 bytes
SHA-256: 0f1097475889a74662e50cf74ba1fa22fbcad54d7e13101db161a78ebb9c3b4d
font_01_sfnt_off000076d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76D3 10640 bytes
SHA-256: e78ddbf35990f72ede4efc8e0340abd518bdbdd8a90849f57134d25793b023db
font_02_sfnt_off00009b4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B4A 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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