Malicious PDF — malware analysis report

Static analysis result for SHA-256 a85de401e52f2f69…

MALICIOUS

PDF

86.4 KB Created: 2020-08-13 15:46:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8bca2fd27a54801cfb68c035e0e8b003 SHA-1: cfcb7ab33e1c722141dce3f8cab93a1aba3cf1e2 SHA-256: a85de401e52f2f690eb8bf7e838adddb64cc8bba5a6a7055fd80ce1f9c276733
120 Risk Score

Malware Insights

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

The PDF contains a prominent link to 'ttraff.com', identified as a malicious redirector. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy to obscure the malicious destination. The file's metadata and heuristic firings strongly support a malicious redirector attack pattern.

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/pify?keyword=nostra+aetate+pdf+hrvatski
    • http://files.michaelcgavin.com/uploads/1/3/1/3/131381799/3567899.pdf
    • http://files.awgoldens.com/uploads/1/3/0/8/130814258/rufuguwiwuzu.pdf
    • http://files.omhathayoga.com/uploads/1/3/0/9/130969897/romomefa.pdf
    • https://cdn.shopify.com/s/files/1/0434/6596/5718/files/diare_akut_pada_bayi.pdf
    • https://cdn.shopify.com/s/files/1/0435/2707/8052/files/4660260360.pdf
    • https://cdn.shopify.com/s/files/1/0435/9267/9582/files/anemias_carenciales.pdf
    • https://cdn.shopify.com/s/files/1/0431/8960/0414/files/zizekiboninewajokijeku.pdf
    • https://cdn.shopify.com/s/files/1/0430/8946/1410/files/64417954984.pdf
    • https://cdn.shopify.com/s/files/1/0438/4364/9698/files/teks_sholawat_burdah.pdf
    • https://cdn.shopify.com/s/files/1/0427/7246/3772/files/43366651524.pdf
    • https://cdn.shopify.com/s/files/1/0431/2432/6564/files/33868817301.pdf
    • https://cdn.shopify.com/s/files/1/0434/3991/5164/files/67108150048.pdf
    • https://cdn.shopify.com/s/files/1/0455/5816/9765/files/lepezurigobo.pdf
    • https://cdn.shopify.com/s/files/1/0436/6493/3014/files/55286987617.pdf
    • https://cdn.shopify.com/s/files/1/0430/6065/8330/files/65057172207.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_off0000ffa8.bin
0c429ecaee0be770d4507e5416edd14874e8a5014d608c9b9fbe44c6f42b408b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFFA8 4872 bytes
font_01_sfnt_off0001105a.bin
75c04480215aafd4f492c3f604fe9241738007db876f89d62bb68a37ff826f4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1105A 15692 bytes
font_02_sfnt_off00013cfd.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13CFD 4324 bytes

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