Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ef8abb9cc52f873…

MALICIOUS

PDF

78.9 KB Created: 2020-07-29 03:10:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8465d56912dd724f725a3eed3808e738 SHA-1: fe5b61cd61549b33e6f329063190194f9abdb781 SHA-256: 3ef8abb9cc52f8731b22adbf7a6ec5828a5e3aa90a32b8fcb67faee469d77818
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector. The primary URL leads to a link farm hosted on ttraff.com, which is known for malicious redirection. The document body is heavily obfuscated, but the presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic strongly suggest a lure to external malicious sites. No scripts were extracted from this sample.

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=giorgio+agamben+books+pdf In PDF document text
    • http://files.arcnwi.com/uploads/1/3/1/4/131453348/5608540.pdfIn PDF document text
    • http://files.holtzeducationalcenter.org/uploads/1/3/1/3/131382673/likax.pdfIn PDF document text
    • http://files.grahamhunt.net/uploads/1/3/1/6/131606694/xototijavipu_piwineg_zozolinu.pdfIn PDF document text
    • http://files.stonemassageandwellness.com/uploads/1/3/1/8/131871433/xupotak-gifiterim-jilurenewar-folidofevoj.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/1/0435/6784/1443/files/zebifusogafubesaloworivil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6341/8784/files/waxana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4740/3168/files/dudalokatogivaza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3015/0309/files/65909561600.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8333/2772/files/97425263061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1102/9667/files/pakulujozokebizidifa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3206/8775/files/94307436951.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1293/2255/files/wetafisuromo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1901/7124/files/pofavikopaguzexapimi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7199/6053/files/37429968092.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1570/8580/files/45985005068.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7833/4117/files/posavivezuzusuwipaditati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1959/7981/files/21376180539.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 5

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_off0000f03f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF03F 5272 bytes
SHA-256: acfc72c5ad4f5dc357c91062cdf40fddf53e0c0b3130104626ddb5895ae5d720
font_01_sfnt_off00010209.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10209 13348 bytes
SHA-256: 3f564172b99c80807c078d2d899dc364adc350626b4df26db1a804fa8e544217

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