Malicious PDF — malware analysis report

Static analysis result for SHA-256 282afc2f541c02a2…

MALICIOUS

PDF

44.6 KB Created: 2020-07-26 09:37:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83af237942c9bfec3e9a506d7dc9e394 SHA-1: 997e559de68e476d6313653a5d7bcf966ccb0d45 SHA-256: 282afc2f541c02a24b4a2f0d9ed25047c14f7f98aae74c3607016d64d8930321
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, with one pointing to a known malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates a critical threat, and 'PDF_SEO_LINK_FARM' suggests a large number of external links, likely for malicious purposes such as SEO manipulation or phishing. The document body is heavily obfuscated and unreadable, providing no further context.

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.ru/pify?keyword=alejandro+american+idol+last+performance
    • http://files.metis-inc-oregon.com/uploads/1/3/1/3/131380146/pewufuvape.pdf
    • http://files.safecitysecurity.com/uploads/1/3/1/8/131857758/09afb63dea9359.pdf
    • http://files.ktwines.net/uploads/1/3/0/7/130775892/28073d9d3ad1554.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fezusagofetivori.pdf
    • https://cdn.shopify.com/s/files/1/0433/9073/0405/files/bivagevuzexotafogeg.pdf
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/7934438377.pdf
    • https://cdn.shopify.com/s/files/1/0431/0515/7282/files/65400840149.pdf
    • https://cdn.shopify.com/s/files/1/0431/6663/0037/files/3875273446.pdf
    • https://cdn.shopify.com/s/files/1/0435/4578/8565/files/5321020956.pdf
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/71252674233.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53059057271.pdf
    • https://cdn.shopify.com/s/files/1/0427/3415/7991/files/76061526665.pdf
    • https://cdn.shopify.com/s/files/1/0431/8052/3678/files/mojemisalobamosiral.pdf
    • https://cdn.shopify.com/s/files/1/0437/4305/1937/files/24125206767.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/1/0431/6663/0037/files

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070fc.bin
714462bce375b9fddedb243011cc14889496416d754d204347472e8177f680ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70FC 5156 bytes
font_01_sfnt_off00008265.bin
a5408f3acd08404176ad1ae5dbdc07e628e5e8fc748d5320140070e675ba44f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8265 10200 bytes

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