Malicious PDF — malware analysis report

Static analysis result for SHA-256 58733c0ec8080ddb…

MALICIOUS

PDF

36.0 KB Created: 2020-08-12 02:22:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 30778bf48dcd08804ce975da1999af46 SHA-1: 8fc5663259964294c50c8dc4f9ff8c13df863022 SHA-256: 58733c0ec8080ddbaeae77456f637765192677726393a7a9d2b16b6eb114cb3d
194 Risk Score

Malware Insights

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

The PDF contains a link to a redirector service, which is a common technique for distributing malware or leading users to phishing sites. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this behavior. The document body, though heavily obfuscated, contains the text 'Coaguchek xs plus user manual uk' and the malicious URL, suggesting a lure to disguise the malicious link. The ML classifier also strongly indicated maliciousness.

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.cc/wb?keyword=coaguchek%20xs%20plus%20user%20manual%20uk In PDF document text
    • http://fezani.pcduuma.com/uploads/1/3/0/7/130775350/97d4bd8.pdfIn PDF document text
    • http://wonesefi.faysoriginals.net/uploads/1/3/1/3/131380600/1cb9d2cab.pdfIn PDF document text
    • http://files.maxtaxw2.com/uploads/1/3/1/3/131384429/0b01966688224e.pdfIn PDF document text
    • http://files.lambertvilleumc.org/uploads/1/3/2/6/132695438/lodun.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/1/0437/1090/6518/files/48214438282.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7107/0617/files/guxuxowupetizisisamebeve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6508/9941/files/matchbox_20_push.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2149/1621/files/18640569131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6975/7850/files/kedabafigelu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3265/7575/files/82512781482.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8917/4432/files/97112473910.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2585/8714/files/godurujirigisesotowawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4949/2384/files/36284695663.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4536/3610/files/zusilezojirer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0897/4235/files/69497588504.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 3

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_off00004e68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E68 5384 bytes
SHA-256: cb6deb6462c8909143610040ff9dc172e471c87980fc6d44ada20e7b55429ea7
font_01_sfnt_off00006096.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6096 9968 bytes
SHA-256: bbd6c4587a45b95136c67f4440bfbf8ea55f9e2eeb5a45ab0965f442521682c8

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