Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bf54d7226fcd5b1…

MALICIOUS

PDF

44.2 KB Created: 2020-08-23 15:32:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8cfb9312358606a16e08620c71727b2c SHA-1: a95193b8a39065ad19a53f5356a5e0da6beb3d46 SHA-256: 4bf54d7226fcd5b1c9ea3d69b36c8f5e452cdbd003a25c65e750a01df3ad04ff
194 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The document body, though heavily obfuscated, contains text related to a "Dundie award nomination certificate template" and the malicious URL. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources, as indicated by the PDF_SEO_LINK_FARM heuristic. The primary malicious IOC is the redirector URL.

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=dundie+award+nomination+certificate+template In PDF document text
    • http://files.elliotgardner.com/uploads/1/3/0/7/130775679/niredovevifijamolu.pdfIn PDF document text
    • http://files.worlandshootingcomplex.com/uploads/1/3/0/8/130873794/b709dcc54656450.pdfIn PDF document text
    • http://files.panzyler.com/uploads/1/3/1/0/131070508/677c1cd80d.pdfIn PDF document text
    • http://files.planningthewestside.org/uploads/1/3/2/6/132695714/sitovibigeda.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/1/0433/9073/0398/files/17518039934.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3343/6066/files/gesufugowapusitasoja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9353/2573/files/algorithme_cours_gratuit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9813/5971/files/endeavour_episode_guide_imdb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1669/1612/files/28789278027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0062/6325/files/56207031022.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3089/4999/files/dojofisiwoxejunevijo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7316/6744/files/dulazurolif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5158/1597/files/bingo_sheets_numbers_1-_20.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_off00006f3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F3C 5212 bytes
SHA-256: 220b849ee6e340363b43c3d8d55a4b791e3f93921ba10b3af0af86663455e6e3
font_01_sfnt_off000080fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80FA 10164 bytes
SHA-256: d298fed60d2797f512bd7c6bc334f32427d7606f0d190a96083b7376fb518e8f

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