Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2d328955681109a…

MALICIOUS

PDF

35.9 KB Created: 2020-08-11 16:52:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 47ceb3d8765f2a6e6f3bc5d29616a6c5 SHA-1: 55579eb9030839cf6467300f19521ee873a2f1ce SHA-256: e2d328955681109a7599e440129922143748dfbb05cd4c0311ec686cd55ff7c0
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text referencing 'backhoe operator manual pdf' and a URL pointing to a redirector. This suggests the document is designed to trick users into clicking malicious links under the guise of providing a manual.

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=backhoe+operator+manual+pdf In PDF document text
    • http://files.stefanodenicolai.net/uploads/1/3/0/7/130739783/7345816.pdfIn PDF document text
    • http://files.buffalohorticulture.com/uploads/1/3/1/4/131406717/d32f4bf79.pdfIn PDF document text
    • http://files.caninetrainingchallenge.com/uploads/1/3/1/8/131871778/5e9a7190ad404.pdfIn PDF document text
    • http://files.roundislandlightmichigan.com/uploads/1/3/1/0/131071056/paxev-kejenoxivil.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/1/0432/6824/3614/files/non_probability_purposive_sampling.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3809/7051/files/76909870626.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1820/6887/files/83695590671.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7355/1001/files/local_anesthesia_in_pediatric_dentistry.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3179/6632/files/57422296107.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2861/9168/files/53642871546.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3708/2271/files/81194634404.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6512/0670/files/nudeluxojogikaraxebona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3075/8054/files/82065808019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vunazazaxukatokezidabu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8642/9861/files/dipomujamogigupesexumoroz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3051/9716/files/titiwiniwe.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_off00004e11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E11 5332 bytes
SHA-256: 475ca97b763a4df1c84bc8739cc764792e2a018dfdeb2aa80b2bed16a45ccfcb
font_01_sfnt_off00006005.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6005 10300 bytes
SHA-256: c80bf47808fa3f19f725da2c4a14d234ced6c678fc9466425a6a2e866c3f88cc

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