Malicious PDF — malware analysis report

Static analysis result for SHA-256 e82bd18dc98bb8c7…

MALICIOUS

PDF

48.7 KB Created: 2020-08-05 05:24:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 771b51950571befaf5b6d0718e68d8b1 SHA-1: 051282a2856a1179511d5d14008fd6108de8cf02 SHA-256: e82bd18dc98bb8c75b4158b3f9c9db1926c5ed549a0391d1a820f54c48b7b334
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The primary heuristic indicates that the PDF links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This suggests the document is designed to redirect users to malicious content, likely for phishing or malware distribution.

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=annasaheb+patil+arthik+vikas+mahamandal+pdf
    • http://files.sunshinecoastmastersswimmingclub.com/uploads/1/3/1/3/131398497/xipakepasipe.pdf
    • http://files.sothismedias.com/uploads/1/3/0/8/130874369/2328758.pdf
    • http://files.dscottcurryatty.com/uploads/1/3/1/4/131407802/xodobu.pdf
    • https://cdn.shopify.com/s/files/1/0437/4737/7301/files/xubino.pdf
    • https://cdn.shopify.com/s/files/1/0434/8218/5893/files/aromatic_plants_definition.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48466687054.pdf
    • https://cdn.shopify.com/s/files/1/0433/5307/9963/files/j_aurais_prfr_vivre_gratuit.pdf
    • https://cdn.shopify.com/s/files/1/0434/2887/2359/files/xetodigopomadazogatudivet.pdf
    • https://cdn.shopify.com/s/files/1/0432/0926/1217/files/15802541258.pdf
    • https://cdn.shopify.com/s/files/1/0429/5517/8150/files/13210863745.pdf
    • https://cdn.shopify.com/s/files/1/0435/2727/4645/files/pasabubuxitifalawarerorir.pdf
    • https://cdn.shopify.com/s/files/1/0430/8611/9079/files/76579287659.pdf
    • https://cdn.shopify.com/s/files/1/0428/9999/6839/files/7299149462.pdf
    • https://cdn.shopify.com/s/files/1/0429/0173/3542/files/widokuz.pdf
    • https://cdn.shopify.com/s/files/1/0432/2207/3508/files/22018584789.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000635c.bin
6a629438f4eff95f1068986fea022d8aaf709c5b28dcd4acfb25661b38d7074c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x635C 5536 bytes
font_01_sfnt_off00007602.bin
50bf9375f816b7e1669cee8e423d20c32c46727aeb1df6ea715a0be65aada7ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7602 10104 bytes
font_02_sfnt_off000098c6.bin
84e4620e45c9aac2e499905b4c1788f07a9cd28e624f66c95e853fe8c5cbc5d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x98C6 8704 bytes

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