Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0a50b5a6826793c…

MALICIOUS

PDF

112.4 KB Created: 2020-07-31 12:44:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7eaf2c36baf7c5b704456e6c0dca637f SHA-1: 67af95a0a990671d1075fe6003a7e2e9fc1d1cba SHA-256: b0a50b5a6826793cf7727f6da9f5d22c3391dabbec91535dd5c41adc5a2facd6
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that the link 'https://ttraff.com/pify?keyword=adam+smith+capitalism+pdf' leads to known malicious infrastructure. Additionally, the 'PDF_SEO_LINK_FARM' heuristic suggests a mass of external PDF links, many hosted on cdn.shopify.com, which is a common tactic for distributing malicious content or conducting SEO poisoning. The document body is heavily obfuscated and unreadable, providing no further context on the intended lure.

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=adam+smith+capitalism+pdf
    • http://files.lotusranch-homes.com/uploads/1/3/1/4/131407263/5117865.pdf
    • http://files.ourlitkit.com/uploads/1/3/1/0/131069764/37c18.pdf
    • http://files.jeelsphoto.com/uploads/1/3/0/9/130969192/6437182.pdf
    • https://cdn.shopify.com/s/files/1/0430/4614/2114/files/vavidaxafefuzijozub.pdf
    • https://cdn.shopify.com/s/files/1/0431/4107/1016/files/36236678525.pdf
    • https://cdn.shopify.com/s/files/1/0437/9875/7538/files/mapemakaba.pdf
    • https://cdn.shopify.com/s/files/1/0431/0804/0853/files/didexo.pdf
    • https://cdn.shopify.com/s/files/1/0435/0767/9387/files/82554787480.pdf
    • https://cdn.shopify.com/s/files/1/0431/4375/7985/files/nizumifamasopikorepakejes.pdf
    • https://cdn.shopify.com/s/files/1/0430/9313/1425/files/poteganazejona.pdf
    • https://cdn.shopify.com/s/files/1/0430/7573/1616/files/40026815188.pdf
    • https://cdn.shopify.com/s/files/1/0435/8687/9647/files/buzezuxozemuravakikuzus.pdf
    • https://cdn.shopify.com/s/files/1/0434/0622/9654/files/tudoga.pdf
    • https://cdn.shopify.com/s/files/1/0429/6799/0438/files/51053964941.pdf
    • https://cdn.shopify.com/s/files/1/0427/9749/8535/files/40616332341.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_off00017328.bin
8249b713bcb2be5472fe60cf5ee9001fcf903039c64cd3fe07ad883aa190f382		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17328 4744 bytes
font_01_sfnt_off00018347.bin
dfed150b2d0373bba0933aaa7e8a459e60eba9702c274f1cd60027682c0e2fd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18347 15900 bytes

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