Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5d897279fd78b4e…

MALICIOUS

PDF

65.3 KB Created: 2020-08-10 09:23:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 520ece8d8a76424f81e6b6e779a8595d SHA-1: f5144f1748ead05038d73a5f17f35a1a9b6d043b SHA-256: e5d897279fd78b4efbcf42afc3fb0e8002325e343d0aeb9dcb3875250565b765
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=bolt+connection+design+example+pdf', suggesting a lure to a malicious site disguised as a technical document. No scripts were extracted, limiting the analysis of direct execution capabilities.

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.ru/pify?keyword=bolt+connection+design+example+pdf
    • http://files.killastylez.net/uploads/1/3/1/8/131856071/delexiwubufado.pdf
    • http://files.caitlintrude.com/uploads/1/3/1/6/131636890/vesifakisu_dolitoxotujunun.pdf
    • http://files.hilarypugh.com/uploads/1/3/1/4/131408371/cb37f8398.pdf
    • https://cdn.shopify.com/s/files/1/0432/6454/0835/files/vorikularo.pdf
    • https://cdn.shopify.com/s/files/1/0436/8426/6137/files/cma_practice_test_printable.pdf
    • https://cdn.shopify.com/s/files/1/0430/6318/1473/files/80013112218.pdf
    • https://cdn.shopify.com/s/files/1/0428/2292/6492/files/97757173890.pdf
    • https://cdn.shopify.com/s/files/1/0438/0744/1053/files/xuxurufimejaru.pdf
    • https://cdn.shopify.com/s/files/1/0432/8492/2526/files/go_math_kindergarten.pdf
    • https://cdn.shopify.com/s/files/1/0431/9281/1681/files/46219357841.pdf
    • https://cdn.shopify.com/s/files/1/0448/4674/3709/files/css_material_design_shadow.pdf
    • https://cdn.shopify.com/s/files/1/0448/5575/4914/files/brand_photography_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0433/0379/6894/files/kifobusukufopabot.pdf
    • https://cdn.shopify.com/s/files/1/0437/2388/2664/files/1983955062.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/71974896164.pdf
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/43825785256.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_off00009f30.bin
8774b429b63f92c978327be467877f338dec9282ed538d971600f78ad1659de4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F30 5284 bytes
font_01_sfnt_off0000b11c.bin
577bdb378db51785b094fa32c2cdc84c0df28d6afb6a714e05dd315b0f381c71		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB11C 10304 bytes
font_02_sfnt_off0000d47d.bin
f6e0f4a25f18a144688c6b7f40519a5efc98c72643b9054f89526e396d9b459d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD47D 16144 bytes
font_03_sfnt_off0000e97e.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE97E 4324 bytes

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