Malicious PDF — malware analysis report

Static analysis result for SHA-256 02756817e852d263…

MALICIOUS

PDF

36.4 KB Created: 2020-08-11 01:53:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7a35c976ae347b372d1470fd09963f4c SHA-1: f0e89fc1a3bdcdda3eca74f8cdd691441b73db2c SHA-256: 02756817e852d263182b06fe7600a7e6b5e7cd74cfbc445e2719e4fb43160871
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and embedded link structure suggest a phishing attempt disguised as a free download lure, likely to lead users to a malicious site for further exploitation. 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.ru/pify?keyword=libro+de+armando+hoyos+pdf+descargar In PDF document text
    • http://files.pipesandpoints.com/uploads/1/3/1/4/131406934/37eb66c4ba423df.pdfIn PDF document text
    • http://files.melaniegraysmith.com/uploads/1/3/1/6/131637148/janejo-tusiwipenuzurar-dowidovufuwij.pdfIn PDF document text
    • http://files.oceankidsphysio.com/uploads/1/3/0/8/130814967/9790755.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/1/0433/6038/7240/files/1496650974.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5011/4978/files/duxigemoresuzal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8252/1503/files/juxeputiwugomanatesebeva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6135/3371/files/1541939289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1733/1100/files/rogasuxavulanupuvoka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6240/1947/files/5653373397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1734/6982/files/rirasogalexufujudawixiwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tokisesuzarutaxiwiru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/2940/9442/files/the_count_of_monte_cristo_abridged_version.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4456/9242/files/zekemoxit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/49156668282.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0665/5642/files/vegaparatijit.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 1

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_off00004727.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4727 5720 bytes
SHA-256: fc745aa06d7031882c969c4e5d61e9ecbbafdb10d22021093abc4ec6270fe4b3
font_01_sfnt_off00005a6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A6D 13020 bytes
SHA-256: f1c3d4f7ac24e5d3cf7c8b6effbe1f1bc553a051d4200375236e6f7a40693e7e

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