Malicious PDF — malware analysis report

Static analysis result for SHA-256 4975cfc8d17c4f61…

MALICIOUS

PDF

44.0 KB Created: 2020-08-05 13:24:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 475e2ed6ef48ead1df0ecc19fb6146ca SHA-1: 40ccf661e2e9ddfbeb023d30a16d286ae4c1ec0a SHA-256: 4975cfc8d17c4f613d477c6fef813d501f5480a7ffb71b4f42c0120a7f5a570b
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. The primary malicious URL, https://ttraff.ru/pify?keyword=children+s+alphabet+picture+books+pdf, is designed to lure users by mimicking search results for educational content. The document body, though heavily obfuscated, also contains this URL, reinforcing the lure. The presence of numerous PDF links suggests an attempt to distribute malicious content or engage in SEO manipulation.

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=children+s+alphabet+picture+books+pdf
    • http://luwuxitu.4livesports.com/uploads/1/3/1/1/131164312/6c8d91ff8c52226.pdf
    • http://files.rosieduttonphotography.com/uploads/1/3/0/8/130874403/5b366f.pdf
    • http://files.sculptedroots.com/uploads/1/3/1/4/131437276/desomufeno_kogorixefe_zozupumuporezeb.pdf
    • http://files.oakgrovefarmstn.com/uploads/1/3/1/3/131380754/zilurebabilamupalufo.pdf
    • http://files.napervillebedbugs.com/uploads/1/3/1/4/131406505/5620646.pdf
    • https://cdn.shopify.com/s/files/1/0437/3587/5745/files/buvepisidufujefulopufukur.pdf
    • https://cdn.shopify.com/s/files/1/0436/5670/8254/files/88378776674.pdf
    • https://cdn.shopify.com/s/files/1/0433/1202/1657/files/jalavunufotipedozitaki.pdf
    • https://cdn.shopify.com/s/files/1/0431/0892/5600/files/wojesubujosolukirewebexup.pdf
    • https://cdn.shopify.com/s/files/1/0432/4763/2548/files/vibofitibojavusuvigire.pdf
    • https://cdn.shopify.com/s/files/1/0428/9875/1641/files/puxune.pdf
    • https://cdn.shopify.com/s/files/1/0435/4634/5640/files/75654213657.pdf
    • https://cdn.shopify.com/s/files/1/0431/9241/8468/files/japakutud.pdf
    • https://cdn.shopify.com/s/files/1/0437/7886/7358/files/nuevo_catalogo_de_cuentas_sat_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vitalifurefafimeribedewo.pdf
    • https://cdn.shopify.com/s/files/1/0430/1648/7065/files/31126548345.pdf
    • https://cdn.shopify.com/s/files/1/0430/1111/3123/files/203421499.pdf
    • https://cdn.shopify.com/s/files/1/0428/2620/3302/files/88379512705.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_off00006d37.bin
5658e6a95b2afa73ff1c43f75d5fcad32bd75b2e4339f099659c701daf2015cd
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D37 5352 bytes
font_01_sfnt_off00007f55.bin
e7b0c1799136165248a67ed81264929b9d3bb5c341e6c70ebadc5f2861b3874a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F55 10428 bytes