Malicious PDF — malware analysis report

Static analysis result for SHA-256 a031195a105aeb8e…

MALICIOUS

PDF

63.5 KB Created: 2020-08-07 08:59:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ec18b265abae2b04fd91a1232640353 SHA-1: 6b770b72293048d4252be4c25d4d09b75f96bccd SHA-256: a031195a105aeb8e1a774e352722335a341b0dc4fd40ee8f0bac0fa6b0421e6b
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=pdf+robotica+industrial'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary purpose is to lure users to malicious sites. No scripts were extracted from this sample.

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.com/pify?keyword=pdf+robotica+industrial
    • http://files.philbricksgenerators.com/uploads/1/3/0/7/130738892/4e6adf.pdf
    • http://files.pineassociates.com/uploads/1/3/0/7/130776260/3752303.pdf
    • http://files.lalomur.com/uploads/1/3/1/0/131070173/sirutunexomefikis.pdf
    • http://files.boshamretreats.co.uk/uploads/1/3/1/4/131407152/wozinewefokiji.pdf
    • http://files.kdsgiftboutique.com/uploads/1/3/1/6/131636855/sabezagivi.pdf
    • https://cdn.shopify.com/s/files/1/0438/5990/2624/files/lower_back_pain_nhs.pdf
    • https://cdn.shopify.com/s/files/1/0432/3246/0960/files/14541703441.pdf
    • https://cdn.shopify.com/s/files/1/0433/4478/9669/files/44097946313.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/ruxofudezejoveseki.pdf
    • https://cdn.shopify.com/s/files/1/0434/5892/0605/files/19616153160.pdf
    • https://cdn.shopify.com/s/files/1/0435/2809/3850/files/zaxavufemevudofuzut.pdf
    • https://cdn.shopify.com/s/files/1/0432/8148/1884/files/estrategias_de_la_cadena_de_suministros.pdf
    • https://cdn.shopify.com/s/files/1/0428/9078/9027/files/guwozitokinufuwadowum.pdf
    • https://cdn.shopify.com/s/files/1/0435/2360/4631/files/42008918619.pdf
    • https://cdn.shopify.com/s/files/1/0434/6917/6985/files/71619107247.pdf
    • https://cdn.shopify.com/s/files/1/0433/1290/6405/files/boxonixojot.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_off0000af63.bin
35a9df2068186bb8039f9397ee85f75aa58c3d91eb13597db9b4503fe62ef326		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF63 5156 bytes
font_01_sfnt_off0000c0f7.bin
97fbcfec7009220f4f7e2c04d51fdf8bf05860322ad21b7b4ccaffb30e2a8506		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC0F7 14920 bytes

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