Malicious PDF — malware analysis report

Static analysis result for SHA-256 be62c3e0a98ca195…

MALICIOUS

PDF

43.4 KB Created: 2020-08-19 10:19:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41a3cf638dcb20259fa58c0c7b83e246 SHA-1: 95f2b51deab461a93b72b6f23131360b7286c5f9 SHA-256: be62c3e0a98ca1954a0ed634284375e2c9c69942580b4223de76f23c6272713a
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'centrifugation techniques pdf' and a URL that appears to be part of a link farm designed to attract search engine traffic. The primary malicious link redirects to 'https://ttraff.ru/pify?keyword=types+of+centrifugation+techniques+pdf', suggesting a lure to download further malicious content or visit a compromised site.

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=types+of+centrifugation+techniques+pdf
    • http://xilurez.shorelinehicap.org/uploads/1/3/0/8/130814526/40f02cc547975d.pdf
    • http://dufaje.rockofoakland.com/uploads/1/3/1/0/131070112/magowefevoma-bobutuxewan-jutujobena-kewizokafupajig.pdf
    • http://files.struncburkefoundation.org/uploads/1/3/2/7/132712072/giwurewirupobiz.pdf
    • https://cdn.shopify.com/s/files/1/0432/4261/9035/files/54648203915.pdf
    • https://cdn.shopify.com/s/files/1/0432/2633/3351/files/27446320317.pdf
    • https://cdn.shopify.com/s/files/1/0434/0531/2154/files/drop_down_list_for_multiple_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0432/7797/5717/files/wutiboxobirigazagu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tifomev.pdf
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/63045508489.pdf
    • https://cdn.shopify.com/s/files/1/0429/6438/5951/files/zegofufagutakiwomavewox.pdf
    • https://cdn.shopify.com/s/files/1/0428/9894/8255/files/jobutoxuweri.pdf
    • https://cdn.shopify.com/s/files/1/0437/5543/8241/files/52445228540.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_off00006ae6.bin
31ede77b65952b46ede2998eb88f5db2b090b554608f559b3c4e570877f7aabc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE6 5560 bytes
font_01_sfnt_off00007dcd.bin
cb5d79012cd298761afbd298533a9321836bc10278d8a15d7944aeb70bda76f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DCD 10292 bytes

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