Malicious PDF — malware analysis report

Static analysis result for SHA-256 93be8cc0b32a97ee…

MALICIOUS

PDF

39.8 KB Created: 2020-08-16 19:21:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1ef5b1e061432f91a70617c927ab0afc SHA-1: 9edd210b1b2ecb54698323bf786cf77fb8604f65 SHA-256: 93be8cc0b32a97ee1e01c6224ee7a6839b917f22b906acd3c5aaabd3618fa96e
194 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and contains a large number of embedded links, with at least one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains URLs that are also present in the embedded link farm. This suggests the primary purpose is to lure users to malicious sites. No scripts were extracted, limiting the analysis of specific execution behaviors.

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=corona+renderer+for+sketchup In PDF document text
    • http://titekemat.wyaskwellness.com/uploads/1/3/1/6/131606233/9112798.pdfIn PDF document text
    • http://files.magazinebrighton.com/uploads/1/3/1/1/131164081/7cdf75512.pdfIn PDF document text
    • http://files.patersonsland.co.uk/uploads/1/3/0/7/130740323/79d43059374daf.pdfIn PDF document text
    • http://lorofipe.cyanisland.com/uploads/1/3/1/3/131380081/3cb4fe6af8568.pdfIn PDF document text
    • http://files.tennisunderthestars.net/uploads/1/3/1/4/131406412/b9800cb.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/1/0428/3544/3871/files/sibanaxejasifiziseduvugef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5981/4306/files/waxemu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4418/1928/files/tokosutejuguke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0372/4455/files/gekitiwalemizukewoveni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8866/7034/files/bevumisufatuwadi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3690/8439/files/bajozosefarami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2067/2409/files/ximub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5265/5002/files/fovojagegibaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7100/5082/files/54682621212.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_off00005e59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E59 5180 bytes
SHA-256: 7977c8e6df5f79b3852bd5ade8906574285a41d52b694eff1a454aecf2d7850d
font_01_sfnt_off00006ff0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FF0 10116 bytes
SHA-256: 1dd5a861f23f03033d60553dddc7d5d347c2f1deeaa74c72bdb076c5f923ee39

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