Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ab5c3cb01da0b2a…

MALICIOUS

PDF

39.8 KB Created: 2020-08-12 02:06:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe5d5ec39049c4e657bfc98d75592816 SHA-1: 6bfaa4a4f56a5b7ee9964c57f36c76c7b5259d65 SHA-256: 8ab5c3cb01da0b2ab58402b267f965ec0b5be1f896f2c1b4e9e85f19d4b5e7f9
120 Risk Score

Malware Insights

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

The PDF file contains a link farm and a direct link to a known malicious redirector, disguised as a kindergarten sight words PDF. The primary malicious URL is https://ttraff.com/wb?keyword=printable%20kindergarten%20sight%20words%20pdf. This suggests a social engineering attack aimed at tricking users into visiting a malicious site. No scripts were extracted, limiting the analysis of further payload delivery or execution.

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.com/wb?keyword=printable%20kindergarten%20sight%20words%20pdf
    • http://wizuxitaz.thefourthchoir.com/uploads/1/3/2/8/132814930/temajolapod_sapowumomadono.pdf
    • http://files.greenridgewoodnj.org/uploads/1/3/1/4/131454355/xupofasevoke.pdf
    • http://toborof.sycharlutheran.org/uploads/1/3/1/4/131482962/timofirojase.pdf
    • http://files.comeandseencc.com/uploads/1/3/2/7/132741293/4249977.pdf
    • https://cdn.shopify.com/s/files/1/0433/6808/7701/files/21553304110.pdf
    • https://cdn.shopify.com/s/files/1/0441/4350/9656/files/voltz_server_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/9356/5342/files/debug_mocha_tests.pdf
    • https://cdn.shopify.com/s/files/1/0432/6031/3768/files/pazozomejipojosil.pdf
    • https://cdn.shopify.com/s/files/1/0428/1932/2022/files/panusi.pdf
    • https://cdn.shopify.com/s/files/1/0437/0441/8455/files/misusubeguwidadufip.pdf
    • https://cdn.shopify.com/s/files/1/0430/4843/5861/files/authoritative_management_style.pdf
    • https://cdn.shopify.com/s/files/1/0437/9567/7346/files/celestamine_bula_xarope.pdf
    • https://cdn.shopify.com/s/files/1/0435/7108/5475/files/fanivozagivene.pdf
    • https://cdn.shopify.com/s/files/1/0438/6072/1829/files/66492243956.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_off00005cf7.bin
cbfc9002d496cc9fde02cb0f6735e946c257906bd7abb8a0580e8ab23e036df5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CF7 5600 bytes
font_01_sfnt_off00007003.bin
63bb0bc4d9c62fed9e727c0c32238cfbec44db3af488579b145bd4463c1af463		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7003 10024 bytes

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