Malicious PDF — malware analysis report

Static analysis result for SHA-256 27b6750ba504b4b4…

MALICIOUS

PDF

43.2 KB Created: 2020-08-09 21:42:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 894f1c72daf0a59a134d3e81fb50d042 SHA-1: 6c55ee6ac4c97bcad975d166e664464b9b87f089 SHA-256: 27b6750ba504b4b489bbbcced9e2aee0b9e38e520b64f8cb142f34d6cc13ed9a
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=coffee+break+french+lesson+2+pdf', which is a known malicious redirector. This suggests the document is designed to trick users into visiting a malicious website, likely for phishing or malware distribution.

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=coffee+break+french+lesson+2+pdf In PDF document text
    • http://files.anitaglucina.com/uploads/1/3/2/7/132740515/dunugulejala-xiloxef.pdfIn PDF document text
    • http://files.janetsikiricafiberarts.com/uploads/1/3/1/3/131379268/zogukulexesiri-nizupulipoxaf-lodugagi.pdfIn PDF document text
    • http://vupidel.bgphotographic.co.uk/uploads/1/3/0/8/130874478/gutefiva_razobowudogawan_roraradimibof_xujanuduk.pdfIn PDF document text
    • http://files.biauk.com/uploads/1/3/1/4/131437619/5eddb7b23.pdfIn PDF document text
    • http://wukuzub.plantpartners.org/uploads/1/3/2/6/132681947/1b9a9fde2d425e.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/1/0437/1048/0533/files/tunipegipibuzodajij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8866/7039/files/wijabusopinalumijujaso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2087/0044/files/enlace_ionico_libro_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3910/4917/files/kojusepaxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8807/5159/files/kewiwirizivudikuwowib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9105/8070/files/taxuzusazewakew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9369/5391/files/articles_partitifs_et_les_aliments_exercices.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5664/3739/files/40603785531.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1230/8637/files/dainik_jagran_epaper_lucknow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1024/4256/files/winuboxibezufotukadije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2108/9444/files/energia_hidraulica_libros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0841/6168/files/84621438127.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0360/8214/files/biography_outline_template.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A42 5484 bytes
SHA-256: 31c6361ad9eef871acef6bc4eb79c28be377b7734d1b5d2eec2bc93f37085740
font_01_sfnt_off00007cde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CDE 10252 bytes
SHA-256: f038b9f60550c77eb986479b44b3e0033223aa932f0b13a9d45c4bc33e6c45a9