Malicious PDF — malware analysis report

Static analysis result for SHA-256 f810eac1961e5e79…

MALICIOUS

PDF

98.1 KB Created: 2020-08-29 02:07:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77792c05c7b6ea5a1f3597b19afe2e46 SHA-1: 37d7c72cb97016a91e9fee2df80de811c4383998 SHA-256: f810eac1961e5e7989d851a430af7e72a46df3e4316161222ee3dfe0a2a3495b
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=collar+penal+arrastrando+un+peso'. This indicates the document's primary purpose is to redirect users to a potentially harmful site. The document body, though heavily obfuscated, contains the same URL, reinforcing the malicious intent. No scripts were extracted, and the PDF structure itself does not suggest specific exploitation techniques beyond redirection.

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=collar+penal+arrastrando+un+peso
    • https://static.usrfiles.com/ugd/b8c837_df61845d59054d0abe04d449837c5a15.pdf
    • https://static.usrfiles.com/ugd/b8c837_2c2ee0dedd6a448a91324ba382142939.pdf
    • https://static.usrfiles.com/ugd/b8c837_7bc36a9f5104486ca7fc52d0f3f10884.pdf
    • https://static.usrfiles.com/ugd/b8c837_7943355ef603443b9928849a2c7c9bdf.pdf
    • https://cdn.shopify.com/s/files/1/0430/8251/4585/files/tazelesepufidukamu.pdf
    • https://cdn.shopify.com/s/files/1/0463/4981/1869/files/vimasagidorowomakefubovop.pdf
    • https://cdn.shopify.com/s/files/1/0434/9408/0677/files/zubedumawa.pdf
    • https://cdn.shopify.com/s/files/1/0440/7423/8102/files/natejen.pdf
    • https://cdn.shopify.com/s/files/1/0437/0841/6165/files/dora_the_explorer_backpack_song.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gomejalubewetilukifij.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40369191557.pdf
    • https://cdn.shopify.com/s/files/1/0434/4568/2328/files/32260504962.pdf
    • https://cdn.shopify.com/s/files/1/0429/0058/6649/files/36572826347.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_off000146d5.bin
560fa463b5aa68d074fd539ddfdac550e4ea973ace83f40ff8b6c5592aa1edf7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x146D5 4856 bytes
font_01_sfnt_off0001575a.bin
ec0b99b75b4f55b05710e14fe5a06c99680cba59a2b677779422e2e22f8af237		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1575A 10592 bytes

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