Malicious PDF — malware analysis report

Static analysis result for SHA-256 a235559c65156eae…

MALICIOUS

PDF

57.9 KB Created: 2020-09-16 15:32:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 039f6555d7a4375e92a1b40460da3d02 SHA-1: 21727eda614538471b8ba72a952852991c86c4df SHA-256: a235559c65156eaedf6babf5b106b684975cc5a10673b94abbe93f75db7d6dbb
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically `https://ttraff.link/wix?keyword=rough+guide+to+portugal+algarve`. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, including `http://wegesi.sharpeningonsite.com/uploads/1/3/0/7/130776334/senodufezo_revalu.pdf`, designed to obscure the ultimate malicious destination. The ML classifier also 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.
  • 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.link/wix?keyword=rough+guide+to+portugal+algarve In PDF document text
    • http://wegesi.sharpeningonsite.com/uploads/1/3/0/7/130776334/senodufezo_revalu.pdfIn PDF document text
    • http://zilezoze.investwithsmdc.com/uploads/1/3/2/8/132814956/zutuzifixi.pdfIn PDF document text
    • http://files.sarahplatenius.com/uploads/1/3/1/4/131438443/ropapulow.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/1/0428/2381/1239/files/fapafubilofogebaxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6342/7751/files/ccna_free_download_todd_lammle.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7089/7824/files/lovemodamujinibosij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6762/1028/files/92810221960.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4028/5607/files/tulomowubonijina.pdfIn PDF document text
    • https://46ad6f4c-87ef-44e1-9dab-5d21c79df0ee.filesusr.com/ugd/440e29_997d27af21984969b60be309508a3bf5.pdf?index=trueIn PDF document text
    • https://6354af5d-3f82-47ff-8457-662f1616d3d1.filesusr.com/ugd/e643da_552f29e52a2b4c07bddd646d0dfe80e2.pdf?index=trueIn PDF document text
    • https://d29ac49a-1e2e-413a-8184-e8e59389e713.filesusr.com/ugd/277b62_0bc71895b7d34b22b9dee640af4f385c.pdf?index=trueIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9127/1586/files/vuxejawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3360/7842/files/arqiva_group_parent_limited_annual_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2990/2998/files/chennai_gana_album_song_video.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7057/1174/files/dekezezuvomujojefaxamofi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6051/7269/files/mesotelioma_pleural.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_off0000a627.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA627 5112 bytes
SHA-256: 68d3230f86a56de4cc1623a4425aa1ce42cfa861af3289788a746e7ac6733fc0
font_01_sfnt_off0000b78f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB78F 10160 bytes
SHA-256: f667729ba5c6904a97769edf573919391658da354693c2522b00f4dc2711b2ae

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