Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b0423f51bd1d63b…

MALICIOUS

PDF

43.4 KB Created: 2020-08-19 20:57:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82e2acee8d02f54b909af017bd3d6a9d SHA-1: 8adb91e1573879f403281e12ff0d93b28da4c940 SHA-256: 9b0423f51bd1d63bd6ab4499a83c3292f6615bfdbab8d7fd8581107c4c0db908
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains multiple embedded links, with one critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=a6+flyer+template+word'. Another critical heuristic indicates a PDF link farm, with 24 generated SEO PDF links, predominantly hosted on cdn.shopify.com. The document body contains a call-to-action phrase, suggesting a lure to encourage user interaction with the malicious links. The presence of a malicious redirector strongly suggests a phishing or malware distribution attempt.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=a6+flyer+template+word
    • http://files.esa-ohio.org/uploads/1/3/1/4/131437017/giratez.pdf
    • https://cdn.shopify.com/s/files/1/0428/9314/8313/files/gasixipirogirazojokofot.pdf
    • https://cdn.shopify.com/s/files/1/0431/6567/9776/files/46420337051.pdf
    • https://cdn.shopify.com/s/files/1/0435/6728/4383/files/cardiologia_livro.pdf
    • https://cdn.shopify.com/s/files/1/0438/4607/4525/files/latetidubiveji.pdf
    • https://cdn.shopify.com/s/files/1/0432/4245/5195/files/makapobegikijekirebokaku.pdf
    • https://cdn.shopify.com/s/files/1/0435/9186/0383/files/fuserekimofedemirabimed.pdf
    • https://cdn.shopify.com/s/files/1/0437/2224/4250/files/coconut_oil_for_crepey_skin.pdf
    • https://cdn.shopify.com/s/files/1/0430/7176/6690/files/godepibupulani.pdf
    • https://cdn.shopify.com/s/files/1/0437/0196/0854/files/redejetoseketuti.pdf
    • https://cdn.shopify.com/s/files/1/0428/5923/3443/files/43275481361.pdf
    • https://cdn.shopify.com/s/files/1/0438/7789/2251/files/55129061227.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_off00006784.bin
100b0e363b23e51cb84f0a747c630589d6062a6949c8df578c0c528dd8f3d393		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6784 5348 bytes
font_01_sfnt_off000079b0.bin
e6aad46ba603176af38a7c6fab9983792980ea651a27d79eb1b7e4e35a217b6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79B0 12500 bytes

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