Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9a15908378264fd…

MALICIOUS

PDF

51.2 KB Created: 2020-04-11 21:47:48 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 931930a1f6f08be6e21b5653b2fb56d8 SHA-1: 7962cb57bd145637ca00b09c00789af7907d5a92 SHA-256: f9a15908378264fd85b00b5a11bb499ca20700b8cdb63c74a706cc56a14caac1
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to similarly structured URLs on different domains. This pattern is indicative of a link farm or SEO spam campaign designed to drive traffic to a network of sites. The embedded URLs and the PDF structure suggest a malicious intent to redirect users to potentially harmful content or advertisements. No scripts were extracted, limiting the analysis of direct payload delivery.

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://hindsqr.com/uploads/1/3/1/4/131452903/131452903.html#las+coeforas+pdf
    • http://balancebeauty.net/uploads/1/3/1/4/131453850/savef-putaxuzavogigap-zokegopifujeboj-vigerojokusew.pdf
    • http://nyamutpeterpal.com/uploads/1/3/0/5/130543059/galix.pdf
    • http://warsfitness.com/uploads/1/3/0/5/130540699/5662178.pdf
    • http://urbanplatehealth.org/uploads/1/3/0/2/130289278/2915932.pdf
    • http://dadspaintingltd.com/uploads/1/3/0/8/130874265/wenanapojaraturimuj.pdf
    • http://convictroad.com/uploads/1/3/1/0/131070255/5795362.pdf
    • http://stikitgraphics.com/uploads/1/3/0/4/130483494/kogot_nejonudagoxa_mipito_zasomom.pdf
    • http://squareonepartsservices.com/uploads/1/3/0/4/130483242/4689553.pdf
    • http://dimet.asia/uploads/1/3/1/3/131398221/wuwasotov.pdf
    • http://machoco.com/uploads/1/3/0/7/130776603/7c710bd1a3d6.pdf
    • http://rivercoveresidences-sk.com/uploads/1/3/1/3/131398052/soxawemivomezakowi.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_off00007a21.bin
3adcf875d35467d3a73e4bc22c9dcbbbb120f7657df0fb1a609a4577f01d63c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A21 9776 bytes
font_01_sfnt_off00009d8a.bin
93b23448584683d52a1bdfd0b4da56c16c2ba035b16d3f1a491f1b8adbedaadc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D8A 3716 bytes
font_02_sfnt_off0000aa22.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA22 16036 bytes

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