Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed4ae6930ecf3ca5…

MALICIOUS

PDF

48.8 KB Created: 2020-08-12 04:17:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2685031ca5ea5af4ec59ecf75f2e3758 SHA-1: 8a46ce907f368a12fe836fa660686f03b6f799ee SHA-256: ed4ae6930ecf3ca5af59c3a9a09a60dcbabd4ab0ac82fcd45b9af794a4904bc8
194 Risk Score

Malware Insights

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

The PDF document was flagged by a machine learning classifier as malicious and contains a significant number of embedded links. One critical heuristic identified a link to a known malicious redirector, and another noted a large external PDF link farm. The document body, though heavily obfuscated, contains URLs that are likely part of this link farm. The primary attack pattern appears to be the distribution of malicious links within the PDF.

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=articles+of+organization+michigan+pdf In PDF document text
    • http://vamipaj.maynstreetblog.com/uploads/1/3/1/6/131636948/bf240052ba3.pdfIn PDF document text
    • http://files.ay-kay.com/uploads/1/3/0/7/130739021/zurinefisisizenola.pdfIn PDF document text
    • http://luwokedo.sanrafaelheritage.org/uploads/1/3/1/1/131164250/167dbf.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/1/0436/3314/8062/files/alto_sax_chromatic_scale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7080/7459/files/larugerubojufobipuji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8365/3527/files/tadusabarimudesekezimow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0846/6845/files/goldman_cecil_internal_medicine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0918/5688/files/postur_apbn_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0484/5465/files/wizabanufusijovoruviwole.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/74609324901.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7121/8588/files/52630641669.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3391/1705/files/xixeke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6617/1287/files/80940286738.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1478/1088/files/apostila_aula_de_violo.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_off000071fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71FE 5396 bytes
SHA-256: 3a12717728972263c7bf3e9c98d4c97791934dc6c4c84a7c04d5ad5468f6d00f
font_01_sfnt_off00008428.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8428 10580 bytes
SHA-256: ca13fbb91ed0fa86f516d2ef66859a42dbfd7572d2bf6e0185d5f03960edbbae
font_02_sfnt_off0000a80f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA80F 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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