Malicious PDF — malware analysis report

Static analysis result for SHA-256 d725fbe4e989ea64…

MALICIOUS

PDF

50.9 KB Created: 2020-08-02 21:38:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b94c046f687c5db018522729dd32e15 SHA-1: eb369b549f9c390594c51da1599a4287690b28ac SHA-256: d725fbe4e989ea64540c9f0b35aabef87bf23480797b6002666d65e8bcf63c9f
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, disguised as a free download for SPSS. This is further supported by heuristics indicating a malicious redirector link and a link farm, suggesting a phishing or social engineering attempt. The document body, though heavily obfuscated, contains the suspicious URL and text related to downloading software.

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=how+do+i+download+spss+for+free
    • http://files.tpapnj.com/uploads/1/3/0/8/130813765/0d9e8dbb7b.pdf
    • http://files.forwardpathcoaching.com/uploads/1/3/1/8/131856539/wuzonuliponufuk_govorelubode_bagovawusudi_palularowusufa.pdf
    • http://files.belmenphotography.com.au/uploads/1/3/0/7/130740458/7a2cc3795.pdf
    • http://files.pgoodz.com/uploads/1/3/2/6/132681436/mivawomubesasiwami.pdf
    • http://files.tpapnj.com/uploads/1/3/0/8/13081
    • https://cdn.shopify.com/s/files/1/0432/3010/1668/files/39244431535.pdf
    • https://cdn.shopify.com/s/files/1/0429/6078/1465/files/56005260838.pdf
    • https://cdn.shopify.com/s/files/1/0436/1604/3168/files/simemafigizinu.pdf
    • https://cdn.shopify.com/s/files/1/0428/1673/3340/files/31125292626.pdf
    • https://cdn.shopify.com/s/files/1/0429/9853/0202/files/45378872111.pdf
    • https://cdn.shopify.com/s/files/1/0433/3407/4523/files/wexexesuwilerolokedubegem.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wadilizesiwegokadokepub.pdf
    • https://cdn.shopify.com/s/files/1/0433/7382/2102/files/gunida.pdf
    • https://cdn.shopify.com/s/files/1/0435/1708/3803/files/27922272326.pdf
    • https://cdn.shopify.com/s/files/1/0429/2198/4166/files/jojixadurifowokuselovawul.pdf
    • https://cdn.shopify.com/s/files/1/0436/4858/1782/files/94775872328.pdf
    • https://cdn.shopify.com/s/files/1/0431/2042/7157/files/skype_for_bleckberry.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a9f.bin
8187145963fbf8e0b7977f93bb9cbfc296fb812f6e2b6f40a3c8d31ca5a797a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A9F 6744 bytes
font_01_sfnt_off00007b86.bin
68dadb5aaf7b6c617fa0cf6edfcb3179c408d80f366117e47d8d37e96ee2e836		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B86 4796 bytes
font_02_sfnt_off00008be4.bin
3eb56512569c5c58392e60e086a8f21e8b91c14296ab3343bc778796a2f6e523		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BE4 10420 bytes
font_03_sfnt_off0000af93.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF93 4324 bytes

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