Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9af4f030fdc307b…

MALICIOUS

PDF

45.1 KB Created: 2020-08-25 13:58:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3679b4fbda90651fb6207f4c32d30f97 SHA-1: 08aec9cd24b3a34c37e48f92a15686747dfd59b8 SHA-256: e9af4f030fdc307b663ca61db8ea9c09cbe8a9ca512c3b06357b634a07ad8600
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a known malicious redirector. The ML classifier strongly indicated maliciousness. The document body, though heavily obfuscated, contains URLs that are likely part of a link farm designed to lure victims to malicious sites. The primary malicious URL identified is https://ttraff.ru/pify?keyword=bncc+pdf+vers%25C3%25A3o+final.

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=bncc+pdf+vers%25C3%25A3o+final In PDF document text
    • http://files.hendersonbagelcompany.com/uploads/1/3/0/9/130969192/zubemozubaku-xomab.pdfIn PDF document text
    • http://files.onthemoveholistichealth.com/uploads/1/3/2/6/132682585/xomepebujemo_wovorotipofodam.pdfIn PDF document text
    • http://lowid.jenniferinafrica.com/uploads/1/3/2/7/132740978/refalawukul_gowanederi_muvab_kexip.pdfIn PDF document text
    • http://files.seymourcoc.org/uploads/1/3/0/7/130739740/42fa3b8725.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/1/0434/4456/8220/files/66807211546.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4813/2008/files/66663025445.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9712/0151/files/life_without_limits.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4472/4133/files/52422384785.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1771/5361/files/32623119745.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5926/3141/files/nevavin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3864/5144/files/cambridge_english_proficiency_2_for_updated_exam_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1605/1112/files/25630097328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6033/8586/files/bootstrap_4_tutorial_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3229/0215/files/38661752065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0363/3051/files/nomigivideja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/51189386949.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 8

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_off00006fa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA3 5576 bytes
SHA-256: 15c3e1462aab709e82c4659b771d08ffbf4e6fb0c1ab2adbca0285e03272c462
font_01_sfnt_off00008213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8213 10580 bytes
SHA-256: da413d82fc779b029bcd328895df02d3545eca89bd5f7adca55fff813cafcbef

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