Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4258040ba79f802…

MALICIOUS

PDF

68.2 KB Created: 2020-08-11 16:51:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 640bfa3de36f8fdde6d933c926482580 SHA-1: 334a99f8190b5455a314c97b0beea99e0d2d7036 SHA-256: f4258040ba79f80205dc867119686e52ecb5f94da4209652c53abd964c7dae54
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.com). This indicates a link farm designed to obscure the final destination and potentially distribute malware or conduct phishing. The document body, though heavily corrupted, contains a URL that matches the redirector, suggesting it's the primary lure. No scripts were extracted, but the PDF structure and link farm are strong indicators of 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=diploma+electronics+and+communication+interview+questions+pdf In PDF document text
    • http://files.paulberryhillsgallery.studio/uploads/1/3/1/3/131380915/9975652.pdfIn PDF document text
    • http://files.jamjarflowers.co.nz/uploads/1/3/2/7/132712407/584db789344.pdfIn PDF document text
    • http://files.artslcc.com/uploads/1/3/0/7/130776142/32ae9a02.pdfIn PDF document text
    • http://files.sampriti.us/uploads/1/3/1/3/131379639/dapumolivuvox-purew-niwurudisuz-rowipijawew.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/1/0436/9675/0742/files/18474758418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6821/9799/files/vududadugiforakifaxoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/9130/1286/files/apdcl_advertisement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8127/7352/files/gaxigabiviganawerobikagik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4295/4661/files/52815091855.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7096/3350/files/dowofivo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9581/0455/files/43280421582.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/36920421444.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4136/9761/files/basic_guitar_chord_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6574/5312/files/dofojebovepaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3797/4940/files/77816190152.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8249/7701/files/tilarebozidagigevukadunak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6823/3630/files/weruwirafogopewa.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_off0000ccc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCC8 5580 bytes
SHA-256: 5b04e15745e5a9b346b93244dbaf7fda46341ce447ae826b5d96ba8f865ff176
font_01_sfnt_off0000dfb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB6 10248 bytes
SHA-256: 1ba9780377adbb04c33bf0a59ae6fe5e86ce4d824069317e167fc8f9209e41f5

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