Malicious PDF — malware analysis report

Static analysis result for SHA-256 e72bcba1eb934f3c…

MALICIOUS

PDF

56.1 KB Created: 2020-07-29 09:52:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3f6f244cb5045a1ed7b59b1991028f84 SHA-1: 12648b06b9bbb0b1eaca65d1a188c34db56897aa SHA-256: e72bcba1eb934f3cff31b436bb78bee9f817fc29ecdbc0baa54ff860c037ef59
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a large number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that the document is designed to lead users to harmful websites. The 'PDF_SEO_LINK_FARM' heuristic further suggests a mass-generation of links, likely for SEO manipulation or to host phishing content. The document body is heavily obfuscated and unreadable, providing no further context.

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=avionics+tools+pdf In PDF document text
    • http://files.honeyandsagedesigns.com/uploads/1/3/0/7/130775108/soledam-litupekirasim.pdfIn PDF document text
    • http://files.techniquemma.com/uploads/1/3/0/7/130739202/96c4f1ef86812.pdfIn PDF document text
    • http://files.michaelbutlerbrown.com/uploads/1/3/1/3/131379990/xizekupixana.pdfIn PDF document text
    • http://files.en.oslomamma.net/uploads/1/3/1/6/131637889/xeligaj.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/1/0431/8828/9694/files/litosewatamezivovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2263/9527/files/ralelugalis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/91106021931.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2645/5455/files/19393393606.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jivanup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6877/5841/files/36882342549.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2883/9586/files/detewilij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/11428799560.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4689/3730/files/91915524418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3459/8809/files/sudonikariwiwolapajerikuw.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_off00008f3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F3D 4564 bytes
SHA-256: 9b25a2eeb1309a8eba56a80fdc88c1a45401df68ef6dd3d9e70c3627a317fc63
font_01_sfnt_off00009ecf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9ECF 16708 bytes
SHA-256: 2b838e56a62e090a88dd50c13fb1bddb87372211f18e19e1b9e79ccb286b29b3

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