Malicious PDF — malware analysis report

Static analysis result for SHA-256 edadbfcc80261733…

MALICIOUS

PDF

48.1 KB Created: 2020-08-12 22:25:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6cf85356e2e757873a49f3012cbf214b SHA-1: 026d94d8971f7150ee81ec33216726c486d3c49d SHA-256: edadbfcc8026173332b940f51b6e8ab32341a9ad8fb5baf32e1c878c5ca91c19
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, masquerading as a document about air pollution, that redirect to malicious infrastructure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates a direct link to a known malicious redirector. The PDF_SEO_LINK_FARM heuristic suggests a large number of outbound links, likely for SEO manipulation or to host further malicious content. The embedded URL in the document body, 'https://ttraff.ru/pify?keyword=major+causes+of+air+pollution+pdf', is the primary indicator of malicious redirection.

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=major+causes+of+air+pollution+pdf
    • http://xajowetul.germanshepherdguide.com/uploads/1/3/0/8/130874493/fovodimomeveg.pdf
    • http://kewavilus.corpseapple.com/uploads/1/3/2/6/132681231/8748786.pdf
    • http://mevizabab.raquelharrington.com/uploads/1/3/2/7/132710621/36fb46.pdf
    • https://cdn.shopify.com/s/files/1/0432/5471/0427/files/astable_multivibrator.pdf
    • https://cdn.shopify.com/s/files/1/0431/0908/9447/files/nagoriviratajefiwogu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0265/0014/files/42268324605.pdf
    • https://cdn.shopify.com/s/files/1/0430/0426/4601/files/75231147416.pdf
    • https://cdn.shopify.com/s/files/1/0437/5488/1175/files/wikarixizudanaligekefo.pdf
    • https://cdn.shopify.com/s/files/1/0437/6579/2929/files/97577981100.pdf
    • https://cdn.shopify.com/s/files/1/0433/9151/6826/files/93950673082.pdf
    • https://cdn.shopify.com/s/files/1/0430/2887/3367/files/lanthanide_and_actinide_chemistry_simon_cotton.pdf
    • https://cdn.shopify.com/s/files/1/0429/7873/8335/files/lapojemijigagozuto.pdf
    • https://cdn.shopify.com/s/files/1/0430/2284/4067/files/tmux_create_session.pdf
    • https://cdn.shopify.com/s/files/1/0434/0105/2321/files/dopizitetakavo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5134/3269/files/dimopawad.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_off00007d37.bin
315bb67133790a3dc32cecf95b9f1732c10cde12709adc1ba1ec9f47901f018b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D37 5228 bytes
font_01_sfnt_off00008f1b.bin
f81d55516b3c191fbae3f7fb3071d1a232450573c0830c0125e932a7b579384a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F1B 10644 bytes

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