Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c59aff3ddac0851…

MALICIOUS

PDF

38.0 KB Created: 2020-08-28 05:02:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 47e3eb4e6af069d760c7a5aa13b80ac3 SHA-1: 97bb9fec0e7cf5c0fbf5126eef9b1042513dbe93 SHA-256: 0c59aff3ddac085183559986a4379eb0ff1b1d6232428b2de48b10ae2c03ce65
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded links, with one heuristic specifically identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests the document is designed to lead users to malicious infrastructure, likely for phishing or malware distribution.

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=immunology+made+ridiculously+simple In PDF document text
    • http://files.brisbanedanceworkshop.org/uploads/1/3/0/8/130813923/65b02.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7754/1787/files/surah_ahad_nama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3605/5454/files/nizifafazozegofis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6162/2437/files/hapkido_self_defense_techniques.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6032/8608/files/perevamufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0020/9319/files/96388005600.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3161/7945/files/interview_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6676/1120/files/dogala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/3491/8302/files/why_cant_i_download_a_sims_4_expansi.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 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ad8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AD8 5236 bytes
SHA-256: 9152aa683c3d8552a995f6e56a7766714d1e1601d8bb8973220db335d1f29668
font_01_sfnt_off00005c80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C80 9648 bytes
SHA-256: abfcb5841ec6414837fe5f3b4bead4ee341dad0774ecb119fbe099156e017756
font_02_sfnt_off00007d77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D77 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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