Malicious PDF — malware analysis report

Static analysis result for SHA-256 96ca80c7753861e6…

MALICIOUS

PDF

44.0 KB Created: 2020-08-05 04:28:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79a0bb50fe0ed1a98393ff420817af38 SHA-1: ff6ba4a4d5c569d97b1adb31ab8be1c03e7b9787 SHA-256: 96ca80c7753861e63fd22f29e30538514b2b97d2d3f570fb6fc5fe85aba30332
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a technique often used for SEO poisoning or to redirect users to malicious sites. One of the primary links, 'https://ttraff.ru/pify?keyword=6th+grade+math+word+problems+worksheets+with+answers+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the intent is to lure users into clicking malicious links under the guise of educational material.

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=6th+grade+math+word+problems+worksheets+with+answers+pdf
    • http://files.frankysmusicproduction.com/uploads/1/3/1/4/131438013/e2c7f00.pdf
    • http://vuvamubom.knottydesignco.com/uploads/1/3/1/6/131607163/9430407.pdf
    • http://files.austinarttherapycollective.com/uploads/1/3/1/4/131437376/dea6e1b6b1b080.pdf
    • http://files.coloradoxfac.com/uploads/1/3/2/6/132681460/3166459.pdf
    • https://cdn.shopify.com/s/files/1/0437/2588/1498/files/kefubasajevezibubus.pdf
    • https://cdn.shopify.com/s/files/1/0429/6055/2085/files/bonenenelukutosisuninomod.pdf
    • https://cdn.shopify.com/s/files/1/0438/0088/7456/files/8973750463.pdf
    • https://cdn.shopify.com/s/files/1/0437/4138/0762/files/91821377759.pdf
    • https://cdn.shopify.com/s/files/1/0432/4855/0050/files/western_snow_plow_troubleshoot.pdf
    • https://cdn.shopify.com/s/files/1/0431/5286/7494/files/womavujeximonuzara.pdf
    • https://cdn.shopify.com/s/files/1/0438/1625/5650/files/lalanuvigeselogipibuxeve.pdf
    • https://cdn.shopify.com/s/files/1/0435/8035/8815/files/41653862585.pdf
    • https://cdn.shopify.com/s/files/1/0429/5943/7975/files/9736168329.pdf
    • https://cdn.shopify.com/s/files/1/0427/6686/0455/files/3120551015.pdf
    • https://cdn.shopify.com/s/files/1/0431/6240/2967/files/automatic_irrigation_system_project_report.pdf
    • https://cdn.shopify.com/s/files/1/0435/0686/0187/files/79685977823.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_off00006b1e.bin
cbca366ecd3c4cf0e8d80cb387be4f0122fa49ad3e8fa7f5346ef7570b06cf0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B1E 5808 bytes
font_01_sfnt_off00007ec3.bin
deb8106517f2ec70f293e91cbd6aa8fab630c03885eae4129fafa4fef33f0e2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EC3 10556 bytes

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