Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a841e48dd12e0d4…

MALICIOUS

PDF

45.3 KB Created: 2020-08-08 20:52:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c8efac77d5cd780a1d33b9074dc705f4 SHA-1: 7b4e6416f2f18db024655e3432f597c192ae0d1f SHA-256: 4a841e48dd12e0d4fb2deaa02cc5a58f967f1c9b4911fc7d0082b016836c4fee
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a lure related to employment and invoices, directing users to external links. One critical heuristic identified a malicious redirector link, while another noted a large number of PDF links, many hosted on Shopify. The embedded URL 'https://ttraff.cc/wb?keyword=employment%20act%202018%20pdf' is the primary indicator of malicious intent, likely leading to a phishing or malware download site.

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.cc/wb?keyword=employment%20act%202018%20pdf In PDF document text
    • http://files.lynnobrienmusic.com/uploads/1/3/0/7/130776343/gawudotujusunot.pdfIn PDF document text
    • http://files.myschoolchoicestory.org/uploads/1/3/1/3/131383657/jivetujusanisu.pdfIn PDF document text
    • http://files.urbancultureinstitute.org/uploads/1/3/1/4/131437147/zexadupedi-vezefeb.pdfIn PDF document text
    • http://files.pleasantgreenmethodist.org/uploads/1/3/1/1/131163669/9ed7ef.pdfIn PDF document text
    • http://files.cfandtg.com/uploads/1/3/1/3/131379205/zexujogubalu-fozakisusawedef-zibetonafanufi.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/1/0428/2286/0966/files/tiberebawokekomexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1645/3272/files/36243184694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7812/3680/files/pazuwupazozikudapixelix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5107/4214/files/labelezofixivemik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9728/3992/files/90582143946.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2742/3654/files/foviwati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8249/8716/files/zekeve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7225/7181/files/67780887884.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7246/3772/files/xidowekebazudojeredorebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7468/0987/files/cancer_de_mama_prevencion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1841/1417/files/nuxijupuxogujagurefu.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_off000072c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72C9 5608 bytes
SHA-256: 43265f83a211942ca8be31d113ae22524e22dc221eea68b77e6f9e8f0da7ff45
font_01_sfnt_off000085e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85E1 10192 bytes
SHA-256: d3f6ac7061d1819a402e1e3864cf61b879a520feaa535041f64ca02c22ac2193

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