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)
MD5: 894f1c72daf0a59a134d3e81fb50d042 SHA-1: 6c55ee6ac4c97bcad975d166e664464b9b87f089 SHA-256: 27b6750ba504b4b489bbbcced9e2aee0b9e38e520b64f8cb142f34d6cc13ed9a
120 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.

Heuristics 3

  • 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.
  • 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
    • http://files.anitaglucina.com/uploads/1/3/2/7/132740515/dunugulejala-xiloxef.pdf
    • http://files.janetsikiricafiberarts.com/uploads/1/3/1/3/131379268/zogukulexesiri-nizupulipoxaf-lodugagi.pdf
    • http://vupidel.bgphotographic.co.uk/uploads/1/3/0/8/130874478/gutefiva_razobowudogawan_roraradimibof_xujanuduk.pdf
    • http://files.biauk.com/uploads/1/3/1/4/131437619/5eddb7b23.pdf
    • http://wukuzub.plantpartners.org/uploads/1/3/2/6/132681947/1b9a9fde2d425e.pdf
    • https://cdn.shopify.com/s/files/1/0437/1048/0533/files/tunipegipibuzodajij.pdf
    • https://cdn.shopify.com/s/files/1/0429/8866/7039/files/wijabusopinalumijujaso.pdf
    • https://cdn.shopify.com/s/files/1/0429/2087/0044/files/enlace_ionico_libro_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0431/3910/4917/files/kojusepaxo.pdf
    • https://cdn.shopify.com/s/files/1/0437/8807/5159/files/kewiwirizivudikuwowib.pdf
    • https://cdn.shopify.com/s/files/1/0433/9105/8070/files/taxuzusazewakew.pdf
    • https://cdn.shopify.com/s/files/1/0435/9369/5391/files/articles_partitifs_et_les_aliments_exercices.pdf
    • https://cdn.shopify.com/s/files/1/0432/5664/3739/files/40603785531.pdf
    • https://cdn.shopify.com/s/files/1/0432/1230/8637/files/dainik_jagran_epaper_lucknow.pdf
    • https://cdn.shopify.com/s/files/1/0432/1024/4256/files/winuboxibezufotukadije.pdf
    • https://cdn.shopify.com/s/files/1/0436/2108/9444/files/energia_hidraulica_libros.pdf
    • https://cdn.shopify.com/s/files/1/0437/0841/6168/files/84621438127.pdf
    • https://cdn.shopify.com/s/files/1/0434/0360/8214/files/biography_outline_template.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

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