Malicious PDF — malware analysis report

Static analysis result for SHA-256 3db3973cd253c2a6…

MALICIOUS

PDF

34.7 KB Created: 2020-09-17 21:46:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e87bbd92c724a9e57dd2e491db9bb00c SHA-1: bdeda8d86ededc6574e314627169bd4bf2e77832 SHA-256: 3db3973cd253c2a626156f609afbcc4186eee96d37e78a3e94626d5a281c24f6
184 Risk Score

Malware Insights

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

The PDF contains embedded links, with one specifically pointing to a redirector URL associated with a "Taekwondo 2020 Olympics" keyword. This indicates a phishing or scam attempt. The PDF also exhibits characteristics of a link farm, likely for SEO manipulation to distribute malicious content. The ML classifier strongly flagged this PDF as malicious.

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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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.club/wix?keyword=taekwondo+2020+olympics In PDF document text
    • http://files.smithsolarlab.com/uploads/1/3/1/4/131406797/dipiwalekazo.pdfIn PDF document text
    • http://files.hornsbyptsa.org/uploads/1/3/1/3/131379434/bomujakurufilo.pdfIn PDF document text
    • http://banobe.chapelchurch.net/uploads/1/3/0/9/130970004/kubowe.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/1/0434/7432/1560/files/20869909316.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9106/4987/files/wegugasiwigodedagupabege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9426/9333/files/fotubesazojukajavo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0713/0270/files/minecraft_roots_2_fairy.pdfIn PDF document text
    • https://c9980aa8-f3fc-4f0b-b2f0-0d378c54f97b.filesusr.com/ugd/c63bf9_c92d47b0bf074e6ca1b10b7b1d70cad0.pdf?index=trueIn PDF document text
    • https://f3157146-8126-4009-a22c-c0c259cea164.filesusr.com/ugd/bba345_204c719e481c4e1eb4fa4c474fb510d6.pdf?index=trueIn PDF document text
    • https://a6a926c9-f4da-4609-bea3-adf52aaa9977.filesusr.com/ugd/dc6899_948cd24f8b6e4411a1771a16be2c53f3.pdf?index=trueIn PDF document text
    • https://1b8dcd87-5abb-4bb5-9e71-81f14775b12c.filesusr.com/ugd/24deb6_5c18e2597b7c4b6281d4b9c92f6661c0.pdf?index=trueIn PDF document text
    • https://ee4cfefe-1ff2-4f07-815c-aaa9728ecb76.filesusr.com/ugd/a13bc2_1ac4581c65174033af2aa5fd2ae3b531.pdf?index=trueIn PDF document text
    • https://10d5858f-dba2-4b9d-ae90-87199787cfb9.filesusr.com/ugd/8c0e65_ae2043e7ca2f415bb1ace26652baf7dd.pdf?index=trueIn PDF document text
    • https://0e2536e7-adbf-47ad-839a-79e66ba2879f.filesusr.com/ugd/65e777_5866ea1ea6a34bac8d5aa306f900cd4f.pdf?index=trueIn 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_off000048db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48DB 5604 bytes
SHA-256: 3c58e1eb9e7dbab357234cc3b1f0a314353579cc8b6a5da1a0b111ea44b12a9d
font_01_sfnt_off00005bf6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BF6 10180 bytes
SHA-256: f91961a5c4c03c70b9ae21b065d1ac782f833eba3d4fe007e7a648850a03a12a

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