Malicious PDF — malware analysis report

Static analysis result for SHA-256 e906107eaf7d9f34…

MALICIOUS

PDF

46.1 KB Created: 2020-08-14 22:41:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b435dee09bb7b5c629f9ca8d21557cd9 SHA-1: 915c1a1d88519a84b95afb42cb7cc4e6b3ccd46a SHA-256: e906107eaf7d9f34d9986e74ebc74b04b076136ea4c67bdbc1a5b7ead02acf4f
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is https://ttraff.cc/pify?keyword=catholic+bible+study+guide+book, which likely serves as a lure. The document body, though heavily obfuscated, contains references to a 'Catholic bible study guide book' and links to various PDFs hosted on Shopify, suggesting a content-luring tactic. No scripts were extracted, limiting the analysis of direct payload execution.

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.cc/pify?keyword=catholic+bible+study+guide+book
    • http://files.ell-ren.org/uploads/1/3/2/6/132696483/6257853.pdf
    • http://files.sparklycharkaleephronesis.com/uploads/1/3/1/4/131437633/5484042.pdf
    • https://cdn.shopify.com/s/files/1/0434/8765/8141/files/tijatogexegam.pdf
    • https://cdn.shopify.com/s/files/1/0430/9526/1333/files/59617133212.pdf
    • https://cdn.shopify.com/s/files/1/0432/3924/3943/files/dedunijewijumazajisifet.pdf
    • https://cdn.shopify.com/s/files/1/0433/8896/0933/files/tobazugedazizudetete.pdf
    • https://cdn.shopify.com/s/files/1/0430/7920/5013/files/paredizagikom.pdf
    • https://cdn.shopify.com/s/files/1/0432/8800/2710/files/pikuposodapajutalenef.pdf
    • https://cdn.shopify.com/s/files/1/0431/4900/0864/files/pdf_sociologia_general.pdf
    • https://cdn.shopify.com/s/files/1/0433/6143/5813/files/bamurepotolukogiwefaf.pdf
    • https://cdn.shopify.com/s/files/1/0428/1263/7351/files/cartilage_types.pdf
    • https://cdn.shopify.com/s/files/1/0430/7392/9378/files/aleister_crowley_o_livro_da_lei.pdf
    • https://cdn.shopify.com/s/files/1/0432/6454/0825/files/denege.pdf
    • https://cdn.shopify.com/s/files/1/0433/2178/6521/files/16402263603.pdf
    • https://cdn.shopify.com/s/files/1/0435/9569/4239/files/solicitud_de_credencial_biblioteca_vasconcelos.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_off000074ea.bin
1dcaf3668446438e24708d4ce65f06f433cb9855e091004ad0fe3f2cdc768de9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74EA 5316 bytes
font_01_sfnt_off000086f2.bin
86d2be4cba99b57beed941f3d05d91c5d2a5683118a009c8e5e397be83c9cc72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86F2 11100 bytes

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