Malicious PDF — malware analysis report

Static analysis result for SHA-256 552edce44537db1d…

MALICIOUS

PDF

54.9 KB Created: 2020-08-11 23:03:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 153fbb4c417fc9fa7954e6013da0104c SHA-1: 920582e8abc82812bdd4e53cc4e8c6ee803584e2 SHA-256: 552edce44537db1daa930f948b829c2309f815df8d552d8359a4b4bf17ab5bf8
194 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.com/wb?keyword=toshiba%20smart%20tv%2043%20inch%20manual', is flagged as a malicious redirector. The document body, though heavily obfuscated, appears to contain this URL, suggesting a lure to a malicious site. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the malicious nature of the redirector.

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.com/wb?keyword=toshiba%20smart%20tv%2043%20inch%20manual In PDF document text
    • http://files.agimba.org/uploads/1/3/1/4/131453713/2a9f6a1a93f5.pdfIn PDF document text
    • http://files.xinchengqiu.com/uploads/1/3/1/4/131438604/jajavud_sivifaviroxaw_kowebajabab.pdfIn PDF document text
    • http://zitetem.entertainmentgippsland.com.au/uploads/1/3/2/7/132740435/8646055.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/1/0428/1804/4070/files/ladowavugax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7146/3831/files/8903774966.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9798/1082/files/sewogalivikibegazus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2752/1948/files/41016092747.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1823/1709/files/sirifozixafusejumosomegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5348/2135/files/energia_hidraulica_en_colombia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5503/0170/files/movimiento_rectilineo_uniforme_definicion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4049/5000/files/classifying_triangles_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3197/7370/files/40420096552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5540/6494/files/66065131313.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 7

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_off0000977c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x977C 5440 bytes
SHA-256: 6deccc949357fe83ee70c91b3b5a25a3108a8b07764c3681e9528f696bd8c0a7
font_01_sfnt_off0000a9e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9E0 10832 bytes
SHA-256: 741160e64acd1ec9568c377f906d2accc458076a09b71666bd2dbc18c65a3463

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