Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ad5f4782d38d7fc…

MALICIOUS

PDF

41.0 KB Created: 2020-08-08 11:01:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3d5e79355aeae5782b94ac75a7760a60 SHA-1: cecc861b2308399b928da2e87f76f638632ed1ed SHA-256: 2ad5f4782d38d7fcb1e55f8cf00c1d127160aee98e10e7d50731908d467b2613
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure via the URL https://ttraff.com/pify?keyword=economia+ambiental+xavier+labandeira+pdf. This suggests the document is designed to lure users into clicking these links, potentially leading them to malicious websites or further malware downloads.

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=economia+ambiental+xavier+labandeira+pdf In PDF document text
    • http://files.illinoisdelta.org/uploads/1/3/2/6/132681938/2186787.pdfIn PDF document text
    • http://files.cribusinesssystems.com/uploads/1/3/1/3/131383629/074f696d10.pdfIn PDF document text
    • http://files.doylecostumedesign.com/uploads/1/3/1/0/131069789/viralafodosam.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0656/6306/files/26298489801.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0119/2352/files/sedevuzosulapevasopiwugas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0016/8597/files/silexagugakuta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15074065918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9811/2167/files/sosobegor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6271/4773/files/xoliripuvalizeruwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5477/5970/files/jenovawixazerumurimosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/3811/6773/files/send_as_attachment_in_email_in_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7675/4344/files/86833153279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6881/7562/files/48507411645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3760/files/16422889147.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3525/4170/files/ginewagukebeduxuwirojigok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/medade.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005525.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5525 5136 bytes
SHA-256: a68786e2dd9e5d4614617177789e752379b41e31422fb1369a13d7f8b85066df
font_01_sfnt_off00006675.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6675 10116 bytes
SHA-256: d4490f91a04ca1c44188451d2384f75905ad95f2464961bdae8dd4396380b4d9
font_02_sfnt_off000088ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88EC 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361