Malicious PDF — malware analysis report

Static analysis result for SHA-256 e50f3b043411ee4e…

MALICIOUS

PDF

46.4 KB Created: 2020-07-24 02:23:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bae1b03e499bedc060a4d5a837b770f9 SHA-1: 2425a14f6d429011eae5b82978b56501be2e67cd SHA-256: e50f3b043411ee4ec97d4e51ab2321df1849a9211486f1ec0238cc2640aae79b
210 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a malicious redirector and part of a link farm, specifically luring users with an invoice template. The primary malicious URL, 'https://ttraff.cc/pify?keyword=free+editable+invoice+template+pdf+uk', is designed to redirect users to further malicious content. The document body, though heavily obfuscated, contains keywords related to invoices and templates, reinforcing the lure. No scripts were extracted, limiting the analysis of direct payload execution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/pify?keyword=free+editable+invoice+template+pdf+uk In PDF document text
    • http://files.evansconstructionconsultingllc.com/uploads/1/3/2/7/132740275/rizuzubelezu_zatuxotasetoloz_zesenerijop.pdfIn PDF document text
    • http://files.lillyotasevic.ca/uploads/1/3/1/3/131379456/e9bed3.pdfIn PDF document text
    • http://files.davaocityproperties.com/uploads/1/3/0/7/130775992/4410873.pdfIn PDF document text
    • http://files.ubcstephenministry.com/uploads/1/3/1/4/131406092/vebutusigojilirapoxe.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/1/0435/1744/4264/files/zesewepit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7003/7917/files/naroganufexeberabitofetis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1573/2381/files/robujegewarane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9755/5108/files/xokaduw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6745/7188/files/5108077805.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0209/3987/files/73256069013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2236/9446/files/kokuxuvag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6385/2712/files/67684950439.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9948/8410/files/worawabakejusokoki.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_off000077d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77D3 5224 bytes
SHA-256: 3892f56639b10b9255a81a934f1827e8843595cb63efb5d00fd624ddca80649f
font_01_sfnt_off00008989.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8989 10252 bytes
SHA-256: 7ceb74306fdac13f02b2a915a8983b7c4d6f2f08400b80e7d1316ea947e0cfbc

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