Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e8661cb79421816…

MALICIOUS

PDF

38.4 KB Created: 2020-08-27 13:40:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ba9f1caeea43a003e0ea8c7643ca1543 SHA-1: ef887228955d057503c668838f58f8df26aa580b SHA-256: 3e8661cb79421816c4610396500d7334d1a705f4d0b9425e3ff091dd672060d7
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to funnel victims to malicious sites. The document body, though heavily obfuscated, contains the same text as the redirector's keyword parameter, suggesting a lure related to children's clothing. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy to improve search engine ranking for malicious content. No scripts were extracted, but the primary malicious action appears to be redirection via the embedded URL.

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=pantimedias+para+ni%25C3%25B1os In PDF document text
    • http://files.c3edu.org/uploads/1/3/1/3/131398423/jisasisimudisu-womanafol-jusuvonaze.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/1/0432/4907/4336/files/57553256061.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2562/0374/files/susav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2270/5055/files/94613308227.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6640/6552/files/jefegenosisufetoximo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4092/3048/files/programmatically_annotate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4908/2264/files/59045463545.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4560/0931/files/fizefikerinizobuxazen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4628/1120/files/us_history_textbook_11th_grade_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2621/8134/files/health_psychology_9th_edition_taylor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/7333/4424/files/26324403274.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0128/2719/files/honda_element_manual_transmission.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4749/3536/files/bujokobiruw.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_off000054c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54C1 5284 bytes
SHA-256: 8e22290a4e82f91bc1a05ee08415d679c86db3ad83e2533ada7a47a424749b22
font_01_sfnt_off00006658.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6658 11196 bytes
SHA-256: bbf19950c9bcd8ffa37eada1f742d2b81758dcc99734314ead5d1c3458292cad

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