Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0c213c418f99794…

MALICIOUS

PDF

63.6 KB Created: 2020-08-23 09:42:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 164e640edbf3068521a2585da8e7b273 SHA-1: af827fcaac31c68444671118ae8dd45b41fa6c0a SHA-256: d0c213c418f99794a12c33aaf209b04d8218838888103eea0a1189ac960663f5
194 Risk Score

Malware Insights

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

The PDF contains a prominent link that redirects to a known malicious domain, disguised as a helpful resource. The ML classifier strongly indicates malicious intent. The presence of a link farm suggests an attempt to game search engines for visibility, further supporting a malicious lure.

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=latest+ielts+speaking+topics+with+answers+pdf In PDF document text
    • http://petuz.nerdinout.com/uploads/1/3/1/6/131606365/fixukazuwomunux-karefug-xuvet.pdfIn PDF document text
    • http://megediv.aprenderyaonline.com/uploads/1/3/2/3/132303382/c7da425e9eab47.pdfIn PDF document text
    • http://bevokob.coachchoo.com/uploads/1/3/0/9/130968961/numigobedalulov.pdfIn PDF document text
    • http://files.deliciousdelivered.net/uploads/1/3/0/7/130738785/8089a20f8.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/1/0435/5263/7091/files/zotupajefajukipa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3688/4642/files/rugurifopaturekigonesa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4519/1841/files/60422497063.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0049/5260/files/kuzemuberixotagakalad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pujofupokutesigitugut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2892/9945/files/solving_equations_slope_intercept_form_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6961/1932/files/newezifanirelegitenumarox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9091/2159/files/84552312542.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2446/3525/files/69710427439.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9157/4430/files/koroxerix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7990/1096/files/story_elements_puzzle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0766/2504/files/associao_de_resistores_em_serie_exercicios_resolvidos.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_off0000bd3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD3E 5516 bytes
SHA-256: 4a0017424d2e1f49c7f8f0d7958a9f7aec7dadfb42c5e66144e5dc5ff8af8fb1
font_01_sfnt_off0000d003.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD003 9644 bytes
SHA-256: 4a9028d6d641cad854c66ccdc621145ce1b763c82eb21bff26e94158d129cbf4

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