Malicious PDF — malware analysis report

Static analysis result for SHA-256 44d9558f4a02ac15…

MALICIOUS

PDF

42.0 KB Created: 2020-09-02 08:02:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68b06b930fdc245e2b39052bbb68280c SHA-1: 97b184474962b7297482c7723bff87ab9084e593 SHA-256: 44d9558f4a02ac15910310c017f03c0a8c7ff3e0ac8a353142bc04ec4dfea45c
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one heuristic specifically identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that triggers this heuristic. This suggests the primary goal is to redirect the user to malicious infrastructure. No scripts were extracted, limiting further analysis of the attack chain.

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/wix?keyword=absceso+periamigdalino+tratamiento+pdf
    • https://static.usrfiles.com/ugd/1e8759_2d659628f49c4a36a9e9a22b47ac60af.pdf
    • https://static.usrfiles.com/ugd/824332_20836f742cf84390b658106b5474277b.pdf
    • https://static.usrfiles.com/ugd/ee9d3f_b1613c00af674fbbb11ecd6d7b8b41c4.pdf
    • https://static.usrfiles.com/ugd/0adedf_a0f51cbb19ce4a6686f6877311fa3f01.pdf
    • https://cdn.shopify.com/s/files/1/0431/7147/9713/files/dojusovoguwiritebexe.pdf
    • https://cdn.shopify.com/s/files/1/0429/5540/7511/files/xezaxoralemugix.pdf
    • https://static.usrfiles.com/ugd/20d83a_c11088b10be5464399bda0f86d3a58b2.pdf
    • https://static.usrfiles.com/ugd/e5412a_e747a6a2e6be4148b282f640e557bb21.pdf
    • https://static.usrfiles.com/ugd/63d3ad_ff516b5555464bc193b29125c6ce4d85.pdf
    • https://static.usrfiles.com/ugd/97368a_a635a3a78e8f4493af0714ec47a4fc95.pdf
    • https://static.usrfiles.com/ugd/96768c_3ebf0721fb2b4409be66e315519e487e.pdf
    • https://cdn.shopify.com/s/files/1/0432/2807/0052/files/21385825079.pdf
    • https://cdn.shopify.com/s/files/1/0433/4131/6264/files/81163389381.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_off0000629e.bin
30e53755c2331ed35a257a31c752916f4146273b2adf78c7a4fc06d10bee92c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x629E 5604 bytes
font_01_sfnt_off0000758e.bin
2ee5ea8ca145755038c00d2187849fad496e1a9748559068b11a2f5af5eb1e80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x758E 10988 bytes

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