Malicious PDF — malware analysis report

Static analysis result for SHA-256 b683afbe04775d33…

MALICIOUS

PDF

45.9 KB Created: 2020-08-20 04:57:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a61bed01ec4d9872d3f8dbb274b328d SHA-1: 7be4394b76f7490eff713b3b7d12ee7ea1fcac91 SHA-256: b683afbe04775d33c2644cbd5e143956b8c326c61d8fc6c0bbc5404ad10e9bf1
120 Risk Score

Malware Insights

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

The PDF file contains a link farm designed to appear as legitimate forms, such as 'Aetna biometric screening form 2018'. The primary malicious link directs users to a redirector URL, likely to obscure the final destination of a phishing or malware delivery attempt. The PDF structure and embedded links suggest a social engineering tactic to trick users into visiting malicious sites.

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=aetna+biometric+screening+form+2018
    • http://fipezoxa.mpgwga.com/uploads/1/3/1/0/131070498/nerejopuxe.pdf
    • http://lafaxi.elginhigh.co/uploads/1/3/2/6/132681352/juwagefusewozom_bolawukadati.pdf
    • http://files.angeloflove.net/uploads/1/3/0/8/130874276/4745702.pdf
    • https://cdn.shopify.com/s/files/1/0432/3000/3355/files/faa_form_8610_2.pdf
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/mewavepig.pdf
    • https://cdn.shopify.com/s/files/1/0435/4120/1064/files/jewixagenudulibo.pdf
    • https://cdn.shopify.com/s/files/1/0437/6123/8168/files/82202793434.pdf
    • https://cdn.shopify.com/s/files/1/0434/3404/9703/files/gusozetoroxuf.pdf
    • https://cdn.shopify.com/s/files/1/0438/8339/7275/files/67588711592.pdf
    • https://cdn.shopify.com/s/files/1/0432/5913/4112/files/business_law_book_by_sushma_arora.pdf
    • https://cdn.shopify.com/s/files/1/0440/7663/0181/files/examples_of_organic_and_inorganic_compounds.pdf
    • https://cdn.shopify.com/s/files/1/0430/8353/0407/files/bobexulavovada.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c94.bin
2241bf87b2398b790d16d8cf3843361e654a0a7fae9edb3c418f97e146828d3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C94 5820 bytes
font_01_sfnt_off0000704a.bin
e00eef1d8106b6a4bd308d885cd6ba954e178dc324729c461c6f9d2b96460155		 pdf-font-stream PDF embedded font (sfnt) at offset 0x704A 10792 bytes
font_02_sfnt_off0000952d.bin
cb0239a5e77cb37740da0b4997a5f47117ed526887f952b298c44ef8b2f17e18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x952D 16232 bytes

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