Malicious PDF — malware analysis report

Static analysis result for SHA-256 36ef2ecbdba7a511…

MALICIOUS

PDF

53.2 KB Created: 2020-08-06 16:11:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b0dba9ba778572ea5ccc98fdf3b47950 SHA-1: d084da01175f9508e691d4bb30c9b9674f4dc1d5 SHA-256: 36ef2ecbdba7a511c387055617151bbd797e9e40b9cc1b35778f9c4316153c14
194 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The embedded URL points to a redirector, and the document body, though heavily obfuscated, contains a reference to the same URL. The primary intent appears to be directing users to malicious infrastructure through a deceptive link farm.

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/pify?keyword=periodicity+of+physical+properties+pdf In PDF document text
    • http://files.serenityspaceyoga.com.au/uploads/1/3/1/4/131438180/fetubijadopodig.pdfIn PDF document text
    • http://files.josiemusicawards.com/uploads/1/3/0/7/130775244/1cf1f689.pdfIn PDF document text
    • http://files.amomentintimeartwork.com/uploads/1/3/1/4/131452952/3842979.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/1/0438/9706/1531/files/datep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5529/8213/files/53178989146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37263727017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/39732388369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6014/3014/files/vekiruruzozegovowexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2563/6248/files/wolurajugudoxug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7948/3048/files/mobalo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1431/5422/files/lexetelutiruxikovolafaril.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8318/5832/files/tuzerubojofasejorumeju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6778/2808/files/jijisoxefopuliburepop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7652/5984/files/pexuke.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 4

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_off000090a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90A0 5348 bytes
SHA-256: c54f46dd594802240d5d9dce1a352f8b11ce0b90c3ec28c8b55740ab78aaa70d
font_01_sfnt_off0000a2d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2D6 11324 bytes
SHA-256: bce8de7ccdc845e87e2d74e5d0b18b20a5a7142ea7349108edb23f0777589037

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