Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3e2dca077438eac…

MALICIOUS

PDF

42.8 KB Created: 2020-09-13 03:48:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e6216e0863969395cf9adcffffd58e5 SHA-1: b0e094854e0ea2fcb768942b65a7fd0a5099f1da SHA-256: f3e2dca077438eacfd8b188385c6dac8f5709b1121a03517257c0cb6c9356ff1
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as legitimate PDF downloads, but one of the primary links redirects to a known malicious redirector. This indicates a phishing or scam attempt to lure users to malicious infrastructure. The document body contains obfuscated text and metadata suggesting it was generated by wkhtmltopdf, a tool often used to create malicious PDFs.

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.link/wix?keyword=how+writing+works+pdf
    • http://sudavut.dctrombone.com/uploads/1/3/2/3/132302921/tanejemoninipotoxegi.pdf
    • http://files.mnjrc.com/uploads/1/3/1/0/131069978/naluzoke-kadarovet-metinuso-davujawutu.pdf
    • http://fuletub.trinitywellnesscharleston.com/uploads/1/3/0/9/130969525/mobotumape.pdf
    • https://cdn.shopify.com/s/files/1/0430/6780/1749/files/659980670.pdf
    • https://cdn.shopify.com/s/files/1/0432/2174/5822/files/zasonasowelazetozif.pdf
    • https://cdn.shopify.com/s/files/1/0435/4077/5071/files/56544653732.pdf
    • https://static.usrfiles.com/ugd/cd1d52_05f8f0e0f0f34114817bbe4827e5dbb2.pdf
    • https://static.usrfiles.com/ugd/dc8a8e_8ebdcec16b3d4dc9a9dbf375a7c5f215.pdf
    • https://cdn.shopify.com/s/files/1/0434/0360/8216/files/sefabafupesumurat.pdf
    • https://cdn.shopify.com/s/files/1/0434/3165/7638/files/pesiveboxopitan.pdf
    • https://cdn.shopify.com/s/files/1/0431/1311/9905/files/51619563257.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_off00006abe.bin
02315f5c937c52d52b1751b193601b922e257e58ec49b9af5d37d3489ef3f4bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6ABE 5084 bytes
font_01_sfnt_off00007c35.bin
0ba903de78569cfa6c4aad448f8d353b9b652760cc3ca5a71fefb1c83362d3b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C35 10272 bytes

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