Malicious PDF — malware analysis report

Static analysis result for SHA-256 8de165c68a4173da…

MALICIOUS

PDF

54.4 KB Created: 2020-08-28 08:32:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78310635970a769dccfb8df0cb068f6b SHA-1: 06484a7e57856461edb3070dd1d96762cce15efb SHA-256: 8de165c68a4173da050b8323cada389aa26d4130125c56e680c18b466733706c
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=percy+jackson+sea+of+monsters+cyclops'. This URL is presented in the document body, suggesting a social engineering lure related to the search query. The PDF also exhibits characteristics of a link farm, with numerous embedded links, many of which point to benign content, likely to obscure the malicious redirector. 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=percy+jackson+sea+of+monsters+cyclops
    • http://depavon.malianderson.com/uploads/1/3/1/4/131437987/1481907.pdf
    • http://wujidib.bonnenuit.com.au/uploads/1/3/1/6/131607239/21b32bf06816.pdf
    • https://cdn.shopify.com/s/files/1/0434/6331/1513/files/jolly_phonics_worksheets_for_kindergarten.pdf
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/semakekijupuropozovokes.pdf
    • https://cdn.shopify.com/s/files/1/0431/6535/2102/files/85876122062.pdf
    • https://cdn.shopify.com/s/files/1/0434/8136/6693/files/19979014253.pdf
    • https://cdn.shopify.com/s/files/1/0437/1798/4405/files/pesukumijekavolul.pdf
    • https://cdn.shopify.com/s/files/1/0429/5108/2143/files/17308518655.pdf
    • https://cdn.shopify.com/s/files/1/0429/0415/8375/files/44225620896.pdf
    • https://cdn.shopify.com/s/files/1/0434/7127/4146/files/39150093352.pdf
    • https://cdn.shopify.com/s/files/1/0429/5321/2057/files/6790570094.pdf
    • https://cdn.shopify.com/s/files/1/0432/8233/3856/files/57831712470.pdf
    • https://cdn.shopify.com/s/files/1/0437/5052/3029/files/adjective_and_preposition_list.pdf
    • https://cdn.shopify.com/s/files/1/0427/9504/0924/files/riwuna.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/
    • https://cdn.shopify.com/s/files/1/0433/1234/9334/files/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008a1c.bin
097c24b8bfafa855937b85ec07c198d5ebf3b590d66cf91b016ebe336f78c28a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A1C 5144 bytes
font_01_sfnt_off00009b8f.bin
c284da732e752ecdde7a2d7a85ae05253f646a9d90c5a7de9fde6a2850a97a49		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B8F 10192 bytes
font_02_sfnt_off0000be3e.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBE3E 4324 bytes

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