Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccc421554ae4d593…

MALICIOUS

PDF

45.7 KB Created: 2020-08-17 17:08:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e45652c16f058656389a798a9a762436 SHA-1: d10223ddef07f0c100d5746278fc23f1f6832bd6 SHA-256: ccc421554ae4d593a63302e2950fbe72df8776a7ba14eab8836250ac07057d0c
194 Risk Score

Malware Insights

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

This PDF file contains a link to a known malicious redirector, ttraff.ru, which is likely used to host further malicious content or phishing pages. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Excel file in browser using java'. The presence of numerous links to external PDFs, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility. The ML classifier strongly flagged this PDF as malicious.

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.ru/pify?keyword=excel+file+in+browser+using+java In PDF document text
    • http://files.mosaicnorthal.org/uploads/1/3/0/7/130776167/wawikamobuxevafaxuf.pdfIn PDF document text
    • http://files.bodybykat.com/uploads/1/3/1/4/131407406/41027881.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/1/0428/2885/7503/files/48435474934.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0617/3077/files/fitepidov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5376/9123/files/campbell_biology_in_focus_1st_edition_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2937/2836/files/40138536745.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6869/4432/files/tuzadavutawetezekazinaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5985/3977/files/76981045096.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5546/4104/files/63618413519.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8451/3429/files/tewijuxavozogaxanub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9263/1962/files/xokajogotexakamikexowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/xadaxaletugifepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4071/0566/files/24386458262.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3901/4562/files/briggs_and_stratton_model_number.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 2

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_off00006525.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6525 5444 bytes
SHA-256: b5bbf3d7f601880e919360ded3cd7eb805b874dcf143c222bf1716deb0792a3c
font_01_sfnt_off000077cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77CF 16036 bytes
SHA-256: 325d53e3b18e3853f82e943bcf84f6c512dc8df5673c242047f5f74bbb672242

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