Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d956ca1f2035ba6…

MALICIOUS

PDF

42.3 KB Created: 2020-08-25 14:06:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48052ce4df2201bbcf19af00b5e23084 SHA-1: e722a0545a4813ddf930918fb4b1633a71057602 SHA-256: 8d956ca1f2035ba605b6c116061c56a0114ef140d291fb5f0bf5ef7d0fdd1ab5
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK pointing to 'https://ttraff.com/pify?keyword=white+sheet+vinyl+flooring+uk'. Another critical heuristic, PDF_SEO_LINK_FARM, indicates a large number of external PDF links, suggesting a link farm or SEO manipulation tactic. The document body, though heavily corrupted, contains the same suspicious URL. 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.com/pify?keyword=white+sheet+vinyl+flooring+uk
    • http://tubosixe.darbodus.com.au/uploads/1/3/0/8/130874063/1814bdbd63660.pdf
    • http://files.katiebland.com/uploads/1/3/0/8/130814382/jemud-gajobijoxiga-wuxedi-sosuwadugaruro.pdf
    • http://jakupus.wonderfulthings.org.uk/uploads/1/3/1/6/131606289/powixirezigotazez.pdf
    • https://cdn.shopify.com/s/files/1/0431/6617/1293/files/65482524942.pdf
    • https://cdn.shopify.com/s/files/1/0435/0941/6095/files/atlanta_georgia_map.pdf
    • https://cdn.shopify.com/s/files/1/0428/6421/4182/files/github_clone_ssh.pdf
    • https://cdn.shopify.com/s/files/1/0429/0835/2679/files/68634926618.pdf
    • https://cdn.shopify.com/s/files/1/0431/7229/8918/files/94836258563.pdf
    • https://cdn.shopify.com/s/files/1/0438/2585/6672/files/pro_forma_income_statement_in_excel.pdf
    • https://cdn.shopify.com/s/files/1/0433/0877/7637/files/tafap.pdf
    • https://cdn.shopify.com/s/files/1/0437/6251/6122/files/vefewunimaxibatufi.pdf
    • https://cdn.shopify.com/s/files/1/0432/5172/8546/files/lafevewo.pdf
    • https://cdn.shopify.com/s/files/1/0430/3110/1603/files/13018558316.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_off00005e39.bin
549acdf164e096e9e540af47ca0efd0a47aa8a7eeaa5359194b22a61f0453388		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E39 5056 bytes
font_01_sfnt_off00006f82.bin
6c3b0c15298e5b0b0cdb27dad51d92ea2a20459f1df70ba10cfb99993a53b8df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F82 14336 bytes

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