Malicious PDF — malware analysis report

Static analysis result for SHA-256 9450876ef139f505…

MALICIOUS

PDF

42.2 KB Created: 2020-08-01 15:47:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90a3edb0e7187190ac3bbcdb08bc2f89 SHA-1: c7605728b07ee8a929a7c100874f32291fcec3ab SHA-256: 9450876ef139f505c6cf54af04e7bdf8e3a7126bb2037c1e86463000e21054a5
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one prominent link redirecting to malicious infrastructure. The document body, though partially corrupted, suggests a lure related to 'guide to network security pdf'. The primary malicious URL is https://ttraff.cc/pify?keyword=guide+to+network+security+pdf, which is likely used to redirect users to further malicious content. No scripts were extracted from this sample.

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=guide+to+network+security+pdf
    • http://files.salpiconontario.com/uploads/1/3/2/6/132695397/3367778.pdf
    • http://files.lomalivestock.com/uploads/1/3/1/3/131384113/826095e262fe.pdf
    • http://files.mds-singapore.com/uploads/1/3/1/3/131397930/8756154.pdf
    • https://cdn.shopify.com/s/files/1/0428/9586/8057/files/wifuwite.pdf
    • https://cdn.shopify.com/s/files/1/0439/4716/3806/files/31006217898.pdf
    • https://cdn.shopify.com/s/files/1/0438/0724/4450/files/38904296097.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2122/files/97843503849.pdf
    • https://cdn.shopify.com/s/files/1/0433/9567/8357/files/13785130941.pdf
    • https://cdn.shopify.com/s/files/1/0433/8316/0995/files/killing_me_softly_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0430/9575/2864/files/44651817525.pdf
    • https://cdn.shopify.com/s/files/1/0431/5018/0514/files/damewumasilagu.pdf
    • https://cdn.shopify.com/s/files/1/0436/6955/3305/files/42763731977.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/39724419926.pdf
    • https://cdn.shopify.com/s/files/1/0432/9088/6312/files/96088939802.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jepomosojavadoji.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_off000068c4.bin
1d2297b581053591e8f16568a9c108855fd497aca6b8199acd63653c8b43730a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68C4 5196 bytes
font_01_sfnt_off00007aa5.bin
0efc824d2501f388119581a413e4cede8ac4c8746075c43b49470d2e657f7c77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AA5 9856 bytes

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