Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3e018f2a75bbee6…

MALICIOUS

PDF

47.8 KB Created: 2020-08-06 03:48:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b8903a0e4078a7df2fca3c0993db73a3 SHA-1: 354b318b9ace0eb82c9720fc8d83226c52b96a73 SHA-256: b3e018f2a75bbee659719ceae8869d100170d1c5e32e981be5c53c062d94133d
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that masquerades as a Belarus visa application form. This link points to ttraff.com, which is known for malicious redirection. The document also exhibits characteristics of a link farm, with numerous embedded links, many of which are to Shopify, likely for SEO manipulation to increase visibility. The ML classifier strongly supports the malicious nature of this PDF.

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.com/pify?keyword=belarus+visa+application+form+pdf
    • http://files.sparetimewooddesign.com/uploads/1/3/1/6/131606636/4109f7eec7b3.pdf
    • http://files.mantleofelijah.org/uploads/1/3/1/1/131164239/637124504ed.pdf
    • http://files.perfect-art-match.com/uploads/1/3/2/7/132740511/3e834a00ac5ed6.pdf
    • https://cdn.shopify.com/s/files/1/0436/5264/5017/files/anlise_multivariada_de_dados_hair_2020.pdf
    • https://cdn.shopify.com/s/files/1/0432/8439/8236/files/minecraft_pe_0._14._1.pdf
    • https://cdn.shopify.com/s/files/1/0428/9029/7507/files/82989649898.pdf
    • https://cdn.shopify.com/s/files/1/0437/6874/2040/files/pelewinuduxes.pdf
    • https://cdn.shopify.com/s/files/1/0434/9929/0776/files/birth_chart_compatibility.pdf
    • https://cdn.shopify.com/s/files/1/0440/4481/2438/files/dotefosused.pdf
    • https://cdn.shopify.com/s/files/1/0434/6318/0438/files/72133049932.pdf
    • https://cdn.shopify.com/s/files/1/0431/9199/2481/files/46521418652.pdf
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/paxixeromebetemu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4473/2065/files/92344894192.pdf
    • https://cdn.shopify.com/s/files/1/0430/8090/8951/files/gazopinoxebigowowimudijud.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45397061855.pdf
    • https://cdn.shopify.com/s/files/1/0433/8047/4014/files/bosavetadalamegisiw.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_off00007b2a.bin
01e10f71354971f1603e13b36dc33cd8949b227d9e742d513bc3941b1448cea4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B2A 5412 bytes
font_01_sfnt_off00008d84.bin
5de7578970128523ada59f67768869a25be1d20e11bf10a784db663678d65523		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D84 10748 bytes

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