Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e1e0c4b150b5bd7…

MALICIOUS

PDF

42.1 KB Created: 2020-09-07 03:00:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 620e3ba92079935e0e7cdcc8982687f7 SHA-1: bf2487338ddbe09589147d0e67168914276351bb SHA-256: 4e1e0c4b150b5bd726b94fe2f4bb101b3c2b43c00c7e0f7d8f9ed61df31f9966
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDF files, forming a link farm. One critical heuristic identified a link to a known malicious redirector at https://ttraff.me/wix?keyword=formas+bidimensionales+compuestas. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing.

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.me/wix?keyword=formas+bidimensionales+compuestas
    • https://cdn.shopify.com/s/files/1/0433/5822/4549/files/jigefugadadede.pdf
    • https://cdn.shopify.com/s/files/1/0433/6225/5013/files/58557378633.pdf
    • https://cdn.shopify.com/s/files/1/0436/3524/5216/files/activation._jar_maven.pdf
    • https://cdn.shopify.com/s/files/1/0429/8155/6375/files/magororowobasaxob.pdf
    • https://cdn.shopify.com/s/files/1/0430/8575/8617/files/40635932114.pdf
    • https://cdn.shopify.com/s/files/1/0434/3001/9229/files/tcs_affidavit_format.pdf
    • https://cdn.shopify.com/s/files/1/0430/7556/7777/files/wemisojofubuvumifumexu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/nemamonaze.pdf
    • https://cdn.shopify.com/s/files/1/0431/8684/7905/files/nevexefegefeku.pdf
    • https://cdn.shopify.com/s/files/1/0432/1309/5073/files/informe_de_antecedentes_judiciales_paraguay.pdf
    • https://cdn.shopify.com/s/files/1/0428/2492/5347/files/29340310760.pdf
    • https://cdn.shopify.com/s/files/1/0461/9472/0931/files/interstella_5555_the_5tory_of_the_5e.pdf
    • https://cdn.shopify.com/s/files/1/0436/2004/0866/files/3829671389.pdf
    • https://cdn.shopify.com/s/files/1/0459/1874/8823/files/99463231453.pdf
    • https://cdn.shopify.com/s/files/1/0430/1642/1529/files/16108683246.pdf
    • https://cdn.shopify.com/s/files/1/0430/8572/5857/files/69083299776.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_off00006661.bin
5fe3c6cd80f9cdfe28da97d3e7cb518e966d1d3af42dbb2f0adabeb3587ab08a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6661 5312 bytes
font_01_sfnt_off0000784f.bin
a693eb50d2a54e77dd3fc91a9cd2251042f21c0ad2fa11dfd77120b4e455fa9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x784F 10604 bytes

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