Malicious PDF — malware analysis report

Static analysis result for SHA-256 333297f30eec6f5e…

MALICIOUS

PDF

42.6 KB Created: 2020-08-17 01:49:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 63248fdadbd18d9f51301e7db7a8c0ec SHA-1: 8ef9cf4cd73b5601df37050a4f834aae8c13b5c9 SHA-256: 333297f30eec6f5ee8cce1a93e1e0e97aa3bb0b15de73f4240ac9e8b9b830cc2
202 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains and one critical link to a known malicious redirector. The document body, though heavily obfuscated, contains the same malicious URL. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates the primary URL leads to malicious infrastructure. The 'SE_URGENCY_LURE' heuristic suggests a social engineering tactic to encourage clicks.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/pify?keyword=clinical+gastroenterology+and+hepatology+guidelines In PDF document text
    • http://files.davidprossow.com/uploads/1/3/1/4/131408528/fbd0f8b5b9f2d37.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/1/0438/3080/4637/files/6423571655.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1270/1854/files/36828825855.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5061/4429/files/6099975492.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2128/6050/files/balantidium_coli_tratamiento.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8996/1884/files/dojazelazexuso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0555/8436/files/building_construction_illustrated_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1576/5159/files/57311891318.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2022/1607/files/juzikog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7205/9547/files/kinulame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8574/9665/files/vusitolutoxe.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_off000068d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68D7 5340 bytes
SHA-256: af891d8a09a76aad2ccfde186d42b3b3731c0b9b472c2345cb265a83d3508137
font_01_sfnt_off00007af2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF2 10152 bytes
SHA-256: 8a4d2fa03a526d379f6d35b3d602577cfaefadda2805754cb1ad21000416166b

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