Malicious PDF — malware analysis report

Static analysis result for SHA-256 52729d22ea882fca…

MALICIOUS

PDF

92.0 KB Created: 2020-08-12 08:58:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e432dd7e6d748efe3b94fbc902fccbc6 SHA-1: 2380344c62c4d12e7807bbe6b7b54e15a42a03e3 SHA-256: 52729d22ea882fca2866be37371f46085aa248170ac681d87c8eddd51506a415
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious domain, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also strongly flagged this PDF as malicious. The embedded URL points to a redirector service, likely to obscure the final malicious destination. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure.

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/pify?keyword=yasser+seirawan+winning+chess+endings+pdf In PDF document text
    • http://files.cygnetbrow.com/uploads/1/3/1/6/131607110/winekuv.pdfIn PDF document text
    • http://kafoxox.baytutoringnz.com/uploads/1/3/1/4/131453336/5061076.pdfIn PDF document text
    • http://files.boxtermachinery.com/uploads/1/3/2/6/132695574/cf5fcd5.pdfIn PDF document text
    • http://files.pettelleprice.com/uploads/1/3/1/3/131380342/sopemulifoneko.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/1/0431/5771/7152/files/jidotetulepajo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3452/5352/files/14877106714.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3355/8168/files/6745579440.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8406/3654/files/38432477230.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2742/3654/files/lobepolegifalur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0012/6880/files/sefevamugodesowu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6258/2693/files/furegepimugevemowefovori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0458/3318/files/luzutixejudemokokare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1239/9009/files/10056570385.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9862/8501/files/ziduvo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1637/2892/files/62415485071.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9161/6153/files/musifusotetuzetadalel.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_off00012c07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C07 5440 bytes
SHA-256: dd74325bfed65bd0a09e4445aa014f17ff809b1dbd1722cf1c3640deda3fb666
font_01_sfnt_off00013e89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E89 10596 bytes
SHA-256: 60c1c25c8ab8a0b0346aee7d05b42b4f53dee808ba2c06cce9917df48be5bc47

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