Malicious PDF — malware analysis report

Static analysis result for SHA-256 d87fbce6f6c08978…

MALICIOUS

PDF

36.6 KB Created: 2020-08-04 10:10:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7e23676d0ead7b22c1d4a2e8c3ec3d07 SHA-1: 36494f5e04916632a646b749c425902691749860 SHA-256: d87fbce6f6c089784ea543c06ba956bf5680f61dbe3eca3d30dbfe7061f1db46
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically `https://ttraff.cc/pify?keyword=the+economist+23rd+march+2020+pdf`. This indicates the document's primary purpose is to redirect the user to a malicious site. Additionally, the PDF was identified as a link farm, suggesting a broad distribution attempt. The document body, though heavily obfuscated, contains references to 'The economist' and a date, likely part of a social engineering lure.

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/pify?keyword=the+economist+23rd+march+2020+pdf In PDF document text
    • http://files.re-mortgagemyhouse.co.uk/uploads/1/3/1/4/131408017/5f8912acb788.pdfIn PDF document text
    • http://files.tripsandtours.com.ar/uploads/1/3/2/7/132740375/lirafo.pdfIn PDF document text
    • http://files.fritzpolzer.com/uploads/1/3/0/8/130874400/befawawub-mosejilonor.pdfIn PDF document text
    • http://files.caprocktrading.com/uploads/1/3/1/4/131453097/e679903ec3.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/1/0428/0870/5187/files/pmp_flashcards_5th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6041/0006/files/39477572778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6763/7917/files/79312572315.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4537/1549/files/circumference_of_a_circle_word_problems_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1512/5662/files/vajolijete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4273/4237/files/5271393837.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3087/9136/files/august_2020_calendar_cute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0755/8310/files/vamizeroki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8772/4704/files/niwegoxovuvutat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3459/0888/files/smartparts_ion_manual.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 6

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_off00004fc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FC2 5752 bytes
SHA-256: 99fa41f324ef51d6e18f7a00642e3dacc2f0ff3c8fe6e07715580711dbf09839
font_01_sfnt_off00006324.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6324 10148 bytes
SHA-256: 2f12c38330189fa1de1d47d1d29b540f368c49c44975d1f8a9ad6bd127421d40

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