Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d27de397bcd5935…

MALICIOUS

PDF

47.2 KB Created: 2020-07-29 10:55:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5d1a81268fb971b377640c36a4c77529 SHA-1: 1b64ec47aefae90759e2aaac1e64ecb4b178aaf8 SHA-256: 3d27de397bcd5935baa77eaed442e2c2deebbe62b26700e96f44880cb0a67678
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on platforms like Shopify and other file-sharing sites. One of the primary links directs to a known malicious redirector. The document body, though heavily obfuscated, appears to be a lure related to 'definition of leadership and management pdf'. No scripts were extracted, but the heuristic firings strongly indicate a link farm and redirector attack pattern.

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=definition+of+leadership+and+management+pdf In PDF document text
    • http://files.t9corp.com/uploads/1/3/2/3/132302978/mabifogipinewab.pdfIn PDF document text
    • http://files.wvangler.com/uploads/1/3/2/6/132681586/fibudatib.pdfIn PDF document text
    • http://files.chanticleer-press.com/uploads/1/3/0/7/130775286/libowagutuk.pdfIn PDF document text
    • http://files.summerhillbotanicals.com/uploads/1/3/1/4/131453456/5699962.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/1/0428/4927/1975/files/febejagakuxagavukam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1561/7182/files/sevobarejaxipikafumivezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2310/4160/files/7784874478.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1816/6167/files/18009062908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86372263330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7210/2308/files/xapinozikabileluvono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0629/4176/files/bebok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1175/1588/files/83653432354.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32823332632.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8644/6746/files/16256492395.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jikoleluvotejagumali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1329/9620/files/24818712267.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fimovubonivunab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8171/8167/files/66547084757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7837/5829/files/66735409603.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007a75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A75 5244 bytes
SHA-256: 8ea28220e30005957ea17d865c296c6505f3e905cafe1aeb7a6154a2dc9ccf33
font_01_sfnt_off00008c1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C1C 10308 bytes
SHA-256: 85cac71d129148329b7a4e4fb32f39bcf98116c3fab44c671f13eed5df36b8d5