Malicious PDF — malware analysis report

Static analysis result for SHA-256 53a95f287895f1f8…

MALICIOUS

PDF

41.4 KB Created: 2020-08-24 00:24:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6379ee2dfe509d172c2b92461db83a16 SHA-1: 89d45de4df45522a334986a911883a2304bf36d3 SHA-256: 53a95f287895f1f8c5e8aba660edb99fd9e0306a75cd47ab896a1d0c48b61a7c
120 Risk Score

Malware Insights

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

The PDF document contains a mass of external links, masquerading as a current affairs PDF, to a redirector URL. This suggests a phishing or scam attempt to lure users to malicious infrastructure. The primary malicious IOC is the redirector URL, which is used to obscure the final destination. No scripts were extracted, limiting further analysis of the payload.

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.cc/pify?keyword=adda247+current+affairs+august+2019+pdf
    • http://files.lpchd.com/uploads/1/3/0/8/130813783/benukimelag.pdf
    • https://cdn.shopify.com/s/files/1/0430/9811/2167/files/74920293568.pdf
    • https://cdn.shopify.com/s/files/1/0432/4537/1549/files/11237025601.pdf
    • https://cdn.shopify.com/s/files/1/0438/2919/8998/files/nationwide_first_time_buyer_guide.pdf
    • https://cdn.shopify.com/s/files/1/0427/3537/0407/files/10551454306.pdf
    • https://cdn.shopify.com/s/files/1/0431/4061/2262/files/94698448108.pdf
    • https://cdn.shopify.com/s/files/1/0438/1143/8752/files/74775521952.pdf
    • https://cdn.shopify.com/s/files/1/0440/1194/6134/files/vokerosozaluxumajugesuwol.pdf
    • https://cdn.shopify.com/s/files/1/0431/2930/7287/files/77540436539.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_off00006080.bin
c9e7d3ddaa90fffcc7bbca0edc70c53c726b65b3cceb2f0388578ff22d2d3c11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6080 5932 bytes
font_01_sfnt_off000074c9.bin
faa50cbe0f9c58dc933925bdde7905dc250048299df28c0fa7b6bf1579180bf0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74C9 10688 bytes

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