Malicious PDF — malware analysis report

Static analysis result for SHA-256 331743f92204d125…

MALICIOUS

PDF

38.7 KB Created: 2020-08-16 20:41:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d555e2671a8356de5140ada5dc16e48 SHA-1: 674a2944f6906c2888217859411fd39582e6962c SHA-256: 331743f92204d125f680bc9797bdb2776a87040608b76608e003eb4863ce7cec
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, including a critical link to a known malicious redirector at 'https://ttraff.com/pify?keyword=facebook+live+streaming+software+free'. The document body, though heavily obfuscated, contains text related to 'Facebook live streaming software free', suggesting a lure. The presence of numerous Shopify links, while mostly benign, contributes to the SEO link farm heuristic.

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=facebook+live+streaming+software+free
    • http://najusezip.preisendorfer.net/uploads/1/3/2/6/132696323/9a5883b37ec4ec.pdf
    • http://juxamerut.artsmissco.org/uploads/1/3/1/4/131408791/dilew.pdf
    • https://cdn.shopify.com/s/files/1/0427/6423/9014/files/probability_tree_diagram_worksheet_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0428/4511/0438/files/alter_ego_3_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/6640/9638/files/rudutinixinegega.pdf
    • https://cdn.shopify.com/s/files/1/0432/5618/5000/files/23899272109.pdf
    • https://cdn.shopify.com/s/files/1/0431/7695/1965/files/77930897875.pdf
    • https://cdn.shopify.com/s/files/1/0437/6199/1841/files/sojopuzososopirutotu.pdf
    • https://cdn.shopify.com/s/files/1/0435/8835/4207/files/wing_chun_ebook.pdf
    • https://cdn.shopify.com/s/files/1/0429/4259/5239/files/nudiradisufor.pdf
    • https://cdn.shopify.com/s/files/1/0438/3673/5645/files/sigedonexadowejunugexipup.pdf
    • https://cdn.shopify.com/s/files/1/0429/0635/3823/files/english_beginner_reading_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/52325197595.pdf
    • https://cdn.shopify.com/s/files/1/0433/6225/5006/files/bisura.pdf
    • https://cdn.shopify.com/s/files/1/0434/3139/5493/files/nixuve.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/
    • https://cdn.shopify.com/s/files/1/0438/3673/5645/files/sigedonexadowejunugexip

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000590f.bin
700e2d321814e07f2e7704e43204dfe1a9908934d59c8a89ceb6e86fab09fd84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x590F 5512 bytes
font_01_sfnt_off00006bcd.bin
3608c373433f62813de73c64c727e3be8d647e3395a989cd705e569735cc943c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BCD 9848 bytes

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