Malicious PDF — malware analysis report

Static analysis result for SHA-256 b72c3fa7c32a503f…

MALICIOUS

PDF

44.5 KB Created: 2020-08-06 01:35:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fab4cdcd18dcbcc64bcf10d307c4954e SHA-1: 465922834af6f15be0d1e91a68c19cfa81e1a6d2 SHA-256: b72c3fa7c32a503f84757bd0bc351cff309b6ef563a3c32ba3a297b6dd4d114b
160 Risk Score

Malware Insights

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

The PDF contains a visible LOLBin command execution instruction and multiple embedded URLs, including a critical link to a known malicious redirector at 'https://ttraff.cc/pify?keyword=convert+html+to+pdf+angular+4'. The document body, though partially corrupted, also contains this URL and references to PDF conversion tools, suggesting a lure. The presence of a mass external PDF link farm further indicates malicious intent to distribute or redirect users.

Heuristics 4

  • 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.
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • 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=convert+html+to+pdf+angular+4
    • http://files.keith-tealeaf-henley.com/uploads/1/3/1/8/131871786/vanevelesipej.pdf
    • http://files.bfpartyrentals.com/uploads/1/3/0/7/130739719/ralobevibutukigotus.pdf
    • http://files.thearamaicscriptures.com/uploads/1/3/1/3/131383467/33730e325b5.pdf
    • https://cdn.shopify.com/s/files/1/0431/6463/1195/files/wubisaviramulup.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/loxutiwijadewafulon.pdf
    • https://cdn.shopify.com/s/files/1/0428/1712/6567/files/45572282656.pdf
    • https://cdn.shopify.com/s/files/1/0430/7392/9378/files/rutagopijiruxugibedip.pdf
    • https://cdn.shopify.com/s/files/1/0435/7577/1304/files/wegiminololusogoxuz.pdf
    • https://cdn.shopify.com/s/files/1/0439/7678/6078/files/wozuvisuwifemir.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32377204601.pdf
    • https://cdn.shopify.com/s/files/1/0433/3309/1480/files/bebetamuloxojadigibumiliw.pdf
    • https://cdn.shopify.com/s/files/1/0431/0751/6565/files/bomobafokag.pdf
    • https://cdn.shopify.com/s/files/1/0435/3641/6936/files/xaginigokalanutenut.pdf
    • https://cdn.shopify.com/s/files/1/0430/7212/7125/files/juvef.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_off000060b5.bin
e23458f122ef1c709f6f26520252cf1eff2a328b91456b1f41a90d0c76b2f5f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60B5 5332 bytes
font_01_sfnt_off000072ba.bin
c49d3f0f343e47a9265e6be940c65644e00c877bb9c5a59760e17eff4490dc2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72BA 15608 bytes

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