Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a4d4bb22cee7f9d…

MALICIOUS

PDF

35.1 KB Created: 2020-08-03 16:24:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03343911b5303bfd6b5f7fe091697c7c SHA-1: cd36621563c93915a0b35d269081d192843bdfe4 SHA-256: 3a4d4bb22cee7f9d293f656bc394d8f5b9e6294d5b26061ff0ddbf1ba67e588f
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links redirects to a known malicious redirector infrastructure at 'ttraff.cc'. This indicates a social engineering attempt to drive traffic to malicious sites, likely for further exploitation or phishing. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/pify?keyword=attributes+of+god+pdf+lawson
    • http://files.compassengut.com/uploads/1/3/0/7/130775396/349637.pdf
    • http://files.downtownfirst.org/uploads/1/3/0/7/130740385/pesovujudagox-medekeruzek.pdf
    • http://files.englandaccounting.com/uploads/1/3/0/7/130776370/fabafeti.pdf
    • http://files.tammyandtommytravel.com/uploads/1/3/2/8/132814387/5405506.pdf
    • http://files.carrouselmuseum.net/uploads/1/3/1/0/131071231/9350c8c83ab33e5.pdf
    • https://cdn.shopify.com/s/files/1/0429/2666/9987/files/54939533399.pdf
    • https://cdn.shopify.com/s/files/1/0434/9244/2277/files/kadulimot.pdf
    • https://cdn.shopify.com/s/files/1/0430/3942/4669/files/95656680719.pdf
    • https://cdn.shopify.com/s/files/1/0434/5567/6568/files/17876052412.pdf
    • https://cdn.shopify.com/s/files/1/0439/4637/7374/files/46706087651.pdf
    • https://cdn.shopify.com/s/files/1/0434/1324/2005/files/gawepafikobenadifimabo.pdf
    • https://cdn.shopify.com/s/files/1/0435/8602/7677/files/87320709441.pdf
    • https://cdn.shopify.com/s/files/1/0432/8508/6374/files/konixitobebomilude.pdf
    • https://cdn.shopify.com/s/files/1/0439/0522/0776/files/22879574071.pdf
    • https://cdn.shopify.com/s/files/1/0435/1849/2824/files/dafefadixuratajagosoki.pdf
    • https://cdn.shopify.com/s/files/1/0432/8164/5736/files/91708191472.pdf
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/xuxezefegarurep.pdf
    • https://cdn.shopify.com/s/files/1/0431/4136/5922/files/37677370652.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_off000049f7.bin
34080a14bc0fdcda0ff0227bddc95a377c78a4e9d869ae39f34445ddcca513c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49F7 5432 bytes
font_01_sfnt_off00005c87.bin
d0bcf85f36ba4a641d0a1507e5d0ecaed1e017346861fd737b629d69e0b14411		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C87 9856 bytes

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