Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecad53aa306b3f34…

MALICIOUS

PDF

32.9 KB Created: 2020-08-13 15:32:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 06736c64edf9caae69b7428db7aded81 SHA-1: a14312c0ceb448ef1a328afe9a1a3bb7e4ef5e43 SHA-256: ecad53aa306b3f34f3e1a5d208d3d05a767a42b5deebb63babba869c239c5359
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The heuristic PDF_SEO_LINK_FARM indicates a mass external PDF link farm, suggesting the document is designed to lure users to external sites. The ML_NYX_PDF_MALICIOUS classifier strongly supports the malicious nature of this PDF. No scripts were extracted from this sample.

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=iscar+cutting+tools+catalogue+pdf In PDF document text
    • http://kopov.russaultmotorsports.com/uploads/1/3/0/7/130775085/7d3aeb.pdfIn PDF document text
    • http://files.desertratfeatures.com/uploads/1/3/1/4/131452778/845e81e5882.pdfIn PDF document text
    • http://files.hccvermillion.org/uploads/1/3/1/3/131397927/baniladesokadag.pdfIn PDF document text
    • http://files.cea-alaska.org/uploads/1/3/1/4/131483108/lokatawufa_geromeje_dexexovowib_bojirut.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/1/0433/0687/7080/files/rikakaxudote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6095/2229/files/31744643283.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8870/6717/files/les_coliformes_fcaux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8694/6212/files/14619746964.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9420/3806/files/appsc_polytechnic_lecturers_notification_2020_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3761/3461/files/60664214634.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0081/4998/files/gwent_cards_in_white_orchard.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5301/4423/files/vetutefo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/11067845032.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2718/4281/files/21501789496.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0076/5336/files/36491791668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9141/7505/files/allen_aiims_major_test_series_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6649/0006/files/20464775471.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_off00004568.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4568 5260 bytes
SHA-256: 5d03f7dfd3fdfa6966524ed20e1c247832af24d6c0de2ca887698ca7a0577238
font_01_sfnt_off0000574e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x574E 8732 bytes
SHA-256: 850bf81a8d1c178529a2af16785f4e5e735c3723ef36f858c08feaa17e80d0fb

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