Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d8c0baafaeb3b6c…

MALICIOUS

PDF

39.3 KB Created: 2020-09-04 23:48:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e43675795fddf6d8409dc2629ad1fe0 SHA-1: 98be7f8bfb4a0ba012fab2f9ada6f000277c7ffd SHA-256: 1d8c0baafaeb3b6ca7ed632a2e41bb30dccc78c65e7e2d289fc2b3e436a5dd2b
120 Risk Score

Malware Insights

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

The PDF document contains a mass of external links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.club/wix?keyword=variable+optical+attenuator+pdf', which is also flagged as a malicious redirector. This suggests the document's primary purpose is to lure users to malicious infrastructure. 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.club/wix?keyword=variable+optical+attenuator+pdf
    • https://cdn.shopify.com/s/files/1/0429/3882/6908/files/pokemon_lance_theme_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0430/4830/4797/files/foluk.pdf
    • https://cdn.shopify.com/s/files/1/0430/7111/1330/files/21576055814.pdf
    • https://cdn.shopify.com/s/files/1/0440/4710/6213/files/beta_galactosidase_as_a_reporter_gene.pdf
    • https://cdn.shopify.com/s/files/1/0431/9854/6084/files/32907102005.pdf
    • https://static.usrfiles.com/ugd/158fb9_c046a4a8b7f746ec902af5e0049cbee4.pdf
    • https://static.usrfiles.com/ugd/b8c837_971f29d3ee174c45a3ab1ecd491cf847.pdf
    • https://static.usrfiles.com/ugd/f241d9_0534ce30e2c44e32a9d9590849f2fe60.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zorosibal.pdf
    • https://cdn.shopify.com/s/files/1/0427/8019/7031/files/gegixedofafoxe.pdf
    • https://cdn.shopify.com/s/files/1/0435/2117/9816/files/81199714292.pdf
    • https://cdn.shopify.com/s/files/1/0430/2965/9805/files/kizidurarixivadeguni.pdf
    • https://cdn.shopify.com/s/files/1/0428/3557/4943/files/partes_de_un_arnes_de_seguridad.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_off00005ce6.bin
0e2982a83d3048a28a726e59e5b23898126b59b57d34b9db534a8b30bb90b2f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CE6 5076 bytes
font_01_sfnt_off00006e38.bin
d091b0a7578fc32c7770287e6790234413c5362bb99fed078cca16b12e883c63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E38 10132 bytes

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