Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b93f38032ee632f…

MALICIOUS

PDF

41.3 KB Created: 2020-08-09 21:07:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a432c30f62d486e4d7be8a1b63bbd0da SHA-1: 7db29dc1a1bc044f854f524c58b448750e2ab8c4 SHA-256: 9b93f38032ee632f9d11dfa29b949bcd0ceb1322554e32cac79b188023dad2a3
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'business accounting and finance' and includes the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of a link farm further supports the malicious intent of redirecting users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.ru/pify?keyword=business+accounting+and+finance+davies+and+crawford+pdf
    • http://files.thepropertyamazon.com/uploads/1/3/1/4/131453543/misubefa.pdf
    • http://files.en.handyshop-traiskirchen.com/uploads/1/3/0/8/130874254/7416ff7b3c790.pdf
    • http://monumed.powerbodyfitnessinc.com/uploads/1/3/2/7/132710797/kerudo-bawofoguki-rikodexaf-reveresudamejo.pdf
    • http://files.laarmory.net/uploads/1/3/0/8/130813111/fa5337dd02.pdf
    • http://files.somebodyelsesjournal.com/uploads/1/3/0/9/130969371/siwefubitore.pdf
    • https://cdn.shopify.com/s/files/1/0435/9513/7181/files/15607651059.pdf
    • https://cdn.shopify.com/s/files/1/0427/6797/4556/files/mamavabepelowizupotipija.pdf
    • https://cdn.shopify.com/s/files/1/0434/6504/8214/files/mivipubude.pdf
    • https://cdn.shopify.com/s/files/1/0438/1877/8781/files/south_african_constitution_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/6770/3457/files/79740013578.pdf
    • https://cdn.shopify.com/s/files/1/0432/7381/4182/files/renegade_meta_pro.pdf
    • https://cdn.shopify.com/s/files/1/0437/6667/7655/files/45016125529.pdf
    • https://cdn.shopify.com/s/files/1/0440/9357/1224/files/41880580748.pdf
    • https://cdn.shopify.com/s/files/1/0433/6245/1611/files/zowasemusem.pdf
    • https://cdn.shopify.com/s/files/1/0430/7959/8229/files/vizolenarafojegoli.pdf
    • https://cdn.shopify.com/s/files/1/0440/6748/7894/files/tufaluribo.pdf
    • https://cdn.shopify.com/s/files/1/0427/5827/5238/files/10359445809.pdf
    • https://cdn.shopify.com/s/files/1/0430/6042/8962/files/6520054811.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005180.bin
9405258b40b01430a07e636f512e037bbdfac6345bbf44476df5190bf9ccece4
pdf-font-stream PDF embedded font (sfnt) at offset 0x5180 5372 bytes
font_01_sfnt_off000063e7.bin
3ee81344287240204d55e6235d6bccc3a2061ba6d1b332782e38bf936fa3f888
pdf-font-stream PDF embedded font (sfnt) at offset 0x63E7 10900 bytes
font_02_sfnt_off00008786.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x8786 4324 bytes