Malicious PDF — malware analysis report

Static analysis result for SHA-256 246129889a1204a8…

MALICIOUS

PDF

39.9 KB Created: 2020-08-15 04:48:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b085b0f165b357f89ea7dd1fa289faa SHA-1: f4a1d86a0c99d28b4711238949f400219ea442fd SHA-256: 246129889a1204a8d23e3c4e970d19def9e7daf8b146b8254ea48e0ac3ef392d
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'ttraff.com'. The document body, though heavily obfuscated, also contains the URL 'https://ttraff.com/pify?keyword=anemia+diet+pdf', suggesting a lure related to 'anemia diet pdf'. The presence of a link farm and a malicious redirector strongly suggests an attempt to lead users to malicious content, likely for phishing or malware distribution.

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=anemia+diet+pdf
    • http://files.theyogaschoolny.com/uploads/1/3/0/7/130775942/668541.pdf
    • http://wabubiguz.ro.megaplot.org/uploads/1/3/1/4/131453870/wipegosojiwevig.pdf
    • http://files.gmproductions.org/uploads/1/3/0/7/130739480/3192099.pdf
    • https://cdn.shopify.com/s/files/1/0437/1605/1096/files/62544363552.pdf
    • https://cdn.shopify.com/s/files/1/0428/4920/6439/files/dupulozudusexedida.pdf
    • https://cdn.shopify.com/s/files/1/0434/8215/3112/files/39083920242.pdf
    • https://cdn.shopify.com/s/files/1/0435/4657/5016/files/el_ultimo_alquimista_en_paris_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0429/8581/6218/files/54733610045.pdf
    • https://cdn.shopify.com/s/files/1/0429/7395/4204/files/63230587505.pdf
    • https://cdn.shopify.com/s/files/1/0437/4511/6311/files/52789116078.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_off000060a1.bin
a31399f21867a766a5021095a0ff5c35f4b013af523729ae114ccd2b773d6b26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60A1 4868 bytes
font_01_sfnt_off00007120.bin
368f10894fdda89c23ebe652fa46a8c5643c414c9041587bf4a89320fb724b35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7120 10088 bytes

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