Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3117c60f7dee0bf…

MALICIOUS

PDF

43.8 KB Created: 2020-08-18 15:38:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e211329e7b14a82672c84ddefb83a591 SHA-1: 7b2593090450f5893db6de332ae9223dc260fe08 SHA-256: a3117c60f7dee0bfdf4b0d40f38921a097e55482e37a8847f61ea9e9c6eeaa75
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that this URL is part of infrastructure used for malicious purposes. Additionally, the 'PDF_SEO_LINK_FARM' heuristic suggests the PDF is designed to host numerous links, likely for SEO manipulation or to distribute further malicious content. The ML classifier also strongly flagged this PDF as malicious.

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=720p+hd+camera+eyewear+user+manual+pdf In PDF document text
    • http://wulebu.belindadurrant.co.uk/uploads/1/3/2/6/132683001/1458476.pdfIn PDF document text
    • http://files.hilgar.com/uploads/1/3/1/4/131453031/61188864e35af6.pdfIn PDF document text
    • http://files.cinetikfit.com/uploads/1/3/1/6/131637482/zibuxagotulorisodame.pdfIn PDF document text
    • http://dabis.larasanusi.com/uploads/1/3/1/3/131379326/jibozemuz-rejiraxiso-gikurufenoge-gafewuzup.pdfIn PDF document text
    • http://files.marshallglassgc.com/uploads/1/3/2/6/132681779/5567940.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/1/0440/1332/2398/files/non_associative_learning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0501/6226/files/ar_desai_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/27392185694.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7931/1268/files/64203602596.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8581/5205/files/pajujemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8260/2904/files/55235647207.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5458/0391/files/xugajawipa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4855/0050/files/xibowigegetenisibikisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5962/5627/files/39129432757.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 7

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_off0000624d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x624D 5848 bytes
SHA-256: 1cfc65467c7a44957e96736ae969562306abe1e74622b262ae3b05db158b7af4
font_01_sfnt_off00007622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7622 14236 bytes
SHA-256: 8f61a9ec867117e976e235184ec86eb537d7365a895fa2a0ec7530d7d84fc180

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