Malicious PDF — malware analysis report

Static analysis result for SHA-256 92ce57d5248a6dfd…

MALICIOUS

PDF

45.0 KB Created: 2020-08-31 07:55:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 713b9dcd28e3b5710b68343dd15f1f94 SHA-1: e040b29a07512fd00476e598b74d2667e9070eef SHA-256: 92ce57d5248a6dfd26b3d611ffbba76cb7f93d5224860da69ffa915f7a73042c
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to benign Shopify domains, likely for SEO manipulation. No scripts were extracted, and the PDF structure itself does not indicate a specific exploit, leading to an 'unknown family' classification.

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=la+rebelion+de+la+granja+pelicula
    • https://static.usrfiles.com/ugd/b58d21_c7f9bf5195de4b2e8ccd0ba5b938aceb.pdf
    • https://static.usrfiles.com/ugd/b8c837_d7ad1b28489c4ecb8a9d12318e518c9b.pdf
    • https://static.usrfiles.com/ugd/0cd019_de5e02546d8f4dfbb0f15b03d99decb2.pdf
    • https://static.usrfiles.com/ugd/4725f1_da5d0016708f48ccaab39711196e0c17.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/71482320097.pdf
    • https://cdn.shopify.com/s/files/1/0432/9357/3288/files/29508019518.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57955619809.pdf
    • https://cdn.shopify.com/s/files/1/0437/4308/4705/files/research_paper_abstract_example.pdf
    • https://cdn.shopify.com/s/files/1/0429/8457/1031/files/pixanufopuvuka.pdf
    • https://cdn.shopify.com/s/files/1/0435/1836/1755/files/kronos_electronic_timesheets.pdf
    • https://cdn.shopify.com/s/files/1/0427/8213/0332/files/star_brush_photoshop.pdf
    • https://cdn.shopify.com/s/files/1/0437/2352/2216/files/55620778125.pdf
    • https://cdn.shopify.com/s/files/1/0428/5513/7447/files/88625697767.pdf
    • https://cdn.shopify.com/s/files/1/0432/0290/4222/files/basiliscus_vittatus.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_off00006fc2.bin
eef0ec7c6c01affca5dadd032512ce467aae29d8676f03276283988a1260a92e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FC2 5220 bytes
font_01_sfnt_off00008189.bin
f9918e053e4dbf06c04eee17b445b8f11746159275e0dc0fe0a0882005a4e2eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8189 11156 bytes

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