Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e2fa1c25c18814a…

MALICIOUS

PDF

43.3 KB Created: 2020-08-11 20:18:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 226d5f8a267930c4d452d49e7a17d499 SHA-1: e2fd2acec5e44bfa939df5ab8edf094026c2ad40 SHA-256: 8e2fa1c25c18814ac2c610ad3a9d3be7a7345c5104002efe220b4d5ddaeea6ee
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.com. The document body, while containing academic-sounding text, is likely a lure to disguise the malicious intent of the embedded links. The ML classifier strongly flagged this PDF as malicious, supporting the presence of malicious redirector links.

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=advantages+and+disadvantages+of+ecological+systems+theory+pdf In PDF document text
    • http://files.cedartreeholistics.ca/uploads/1/3/0/8/130814014/kulumomage_gijinefafutuk_ladizimilib_pobarolim.pdfIn PDF document text
    • http://files.amadauniversity.com/uploads/1/3/1/6/131636584/rudesetogevif.pdfIn PDF document text
    • http://files.gardaconstruction.com/uploads/1/3/1/6/131606094/mewumi-nimezawobo-degirajav.pdfIn PDF document text
    • http://varibagiv.nmschoir.com/uploads/1/3/0/8/130874474/926986944101d69.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/1/0431/6410/6908/files/komivexusisazogupobi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1638/0831/files/22107702898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4227/5485/files/gaxuvepurekarupi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9411/4465/files/72929839410.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6944/8097/files/60938479796.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/3791/2214/files/types_of_audio_visual_aids_in_teaching_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/8805/5191/files/34544301735.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4935/2349/files/40140902666.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9646434013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/9554/4228/files/cengage_calculus_maths_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8300/5093/files/wigilemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0256/8599/files/97628861254.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_off00006829.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6829 5720 bytes
SHA-256: 44866c25d5bddea4cd98954e593388dd969de5da106049fac28270be06ac986b
font_01_sfnt_off00007b87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B87 10672 bytes
SHA-256: 10cd9abebe2f32eae8c8d8142d6f38766e9f59cfbcf4c40ad0f8f9efa27c41d0

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