Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a2e083eb22750ce…

MALICIOUS

PDF

35.0 KB Created: 2020-08-02 09:48:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b37884fe6f36d6909bcc401335abbd1 SHA-1: a7fd0635ca1f059ccefb68530a878e84d3219911 SHA-256: 9a2e083eb22750ce9879623fcff6af4dbf3a8cf859811b2d4bc98ab56937457f
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The PDF also exhibits characteristics of a link farm, with numerous embedded links to external PDFs, many hosted on Shopify. The primary malicious URL is likely used to redirect the user to a phishing or malware distribution site.

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=hoover+windtunnel+manual
    • http://files.athenas-owl.com/uploads/1/3/2/7/132741029/nokar_mezulikolim_zanisi.pdf
    • http://files.nyabridesmaid.com/uploads/1/3/1/4/131438814/purefus-pubeg-wemezowa-rexujetonipum.pdf
    • http://files.pregnancycentergadsdencounty.org/uploads/1/3/0/7/130739713/xajozuduzesufitifugi.pdf
    • http://files.lenayingli.com/uploads/1/3/0/9/130969728/nilezadowutomu.pdf
    • https://cdn.shopify.com/s/files/1/0428/7840/2723/files/vewoxudumo.pdf
    • https://cdn.shopify.com/s/files/1/0430/9411/4465/files/86241061669.pdf
    • https://cdn.shopify.com/s/files/1/0430/4021/1105/files/17393500512.pdf
    • https://cdn.shopify.com/s/files/1/0433/1523/2921/files/jijagozixelifamowozez.pdf
    • https://cdn.shopify.com/s/files/1/0431/1800/2340/files/86287643547.pdf
    • https://cdn.shopify.com/s/files/1/0433/2702/9400/files/45136153621.pdf
    • https://cdn.shopify.com/s/files/1/0430/4430/7098/files/68828756820.pdf
    • https://cdn.shopify.com/s/files/1/0430/7507/6258/files/674251461.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nazowexoratusitufunu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5265/5002/files/tepukekuzidupolovevumu.pdf
    • https://cdn.shopify.com/s/files/1/0436/3947/2288/files/fedowotek.pdf
    • https://cdn.shopify.com/s/files/1/0429/5409/6806/files/zawuxo.pdf
    • https://cdn.shopify.com/s/files/1/0432/8869/0844/files/lixuperapataj.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_off0000463a.bin
848c71b5c8441eb9605d91c294f78913afcaf5d53953374b9532a8404101dd6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x463A 4904 bytes
font_01_sfnt_off000056de.bin
c82700f87b40154c9a53927ed70f10a42f3f431b43dff79b6c1e87e2c75d0a8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56DE 12888 bytes

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