Malicious PDF — malware analysis report

Static analysis result for SHA-256 c611e7caf541f5e2…

MALICIOUS

PDF

38.0 KB Created: 2020-07-28 03:31:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 360e6b1107d8a7ea4be790f482355e11 SHA-1: bb4f9051a5f69800ec41c59dd57605409862834e SHA-256: c611e7caf541f5e22d09042858ececd0b81f388e92b086e9e0173ae07b1300e7
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a known malicious redirector. The ML classifier strongly indicated maliciousness, and the PDF structure suggests a link farm designed to distribute malicious content. The primary attack pattern involves luring users to external malicious sites via these links.

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.com/pify?keyword=bracket+ft+2face+yori+yori+remix In PDF document text
    • http://files.msrozi.com/uploads/1/3/2/7/132710638/6956291.pdfIn PDF document text
    • http://files.busylilbeefloral.com/uploads/1/3/0/7/130775172/jonuzewosivebetuf.pdfIn PDF document text
    • http://files.nwctahosa.org/uploads/1/3/1/3/131398143/1377525.pdfIn PDF document text
    • http://files.thegiveagency.ca/uploads/1/3/2/3/132303351/c6d1bf7e23b9.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/1/0433/2997/8526/files/bazujuvo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7122/5502/files/fobizoxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6976/7842/files/mitejugajufapitafozeburo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9712/0151/files/senefadulijujugitefol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2518/6466/files/tuwidases.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2602/9463/files/4050294754.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/526428265.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1896/9507/files/zosudedal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2707/0104/files/7473799562.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2649/7182/files/vujofadezadomonetobijalut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1824/8601/files/8924265107.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0409/2828/files/91356635152.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
🗂 Part of campaign: desertdew.net 9 samples

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_off00005865.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5865 4916 bytes
SHA-256: 378bbc7d7c662c63930b90a661c0239db90a34df3223234e734b0b382c734cc1
font_01_sfnt_off0000692d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x692D 9888 bytes
SHA-256: 33158061a74f47808e194b87a787ebc1f4a7c7a6bfdae660e81406c227599dda

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