Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd3eb0ca63bb2430…

MALICIOUS

PDF

117.7 KB Created: 2020-08-09 20:51:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: faa77db8b9de02e7bdfb8f2e13f2710e SHA-1: 6f9316bca1f26ef13182f1aa32be25113450b4e9 SHA-256: dd3eb0ca63bb24308be7eabe06d568d136bd9179417e3455cdeb643023c6b315
194 Risk Score

Malware Insights

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

The PDF was flagged as malicious by an ML classifier and contains a significant number of embedded links, including a known malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. The primary attack pattern involves luring users to click on these links, which likely lead to further malicious content.

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=sumerian+gods+pdf In PDF document text
    • http://files.dancetolifestudio.com/uploads/1/3/1/3/131398174/fawok-mozusovov-zizuna.pdfIn PDF document text
    • http://files.aarstudiomasters.com/uploads/1/3/1/4/131483019/c9e12.pdfIn PDF document text
    • http://files.feministcounselloredmonton.com/uploads/1/3/2/3/132302982/7214791.pdfIn PDF document text
    • http://files.placeoflight.net/uploads/1/3/0/7/130775085/76297cb5ee6f6.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/1/0434/1602/7303/files/bhagavad_gita_summary_in_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8638/0189/files/tugiziwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/88162646073.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7542/0835/files/21385990459.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vijob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8407/7473/files/godugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1666/7815/files/dutafimefemusof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7284/0090/files/pisivuxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1087/5815/files/wilatafomewuzibegawoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5235/8039/files/python_read_serial_port.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6402/5493/files/10415092106.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_off000183c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x183C3 5432 bytes
SHA-256: 45a82c26ba260b5553019d09a8b3d9e71dc61fed23f94b35ad265e1051a8c398
font_01_sfnt_off00019622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19622 17108 bytes
SHA-256: dc9141e052be93cf3532fbc14cc60a3959e25d6f43ee45b5810c541ab1474387

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