Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb975abca9448b6a…

MALICIOUS

PDF

42.8 KB Created: 2020-08-10 02:01:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eaa618e0474ad62f3276f0b4ae6f05f8 SHA-1: 158dcba68d6ccfefb9ca1497eadbb2632c4ec22a SHA-256: eb975abca9448b6a83760304c9dc244b4be737f4367c383f65a9fce07c2bddfc
130 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a large number of external PDF links, indicative of a link farm. The document body also contains a call-to-action phrase, suggesting a lure to click the embedded malicious URL. The primary malicious URL is https://ttraff.cc/pify?keyword=new+criticism+in+english+literature+pdf, which is likely used to redirect the user to a second-stage payload.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=new+criticism+in+english+literature+pdf
    • http://files.trainingtravelinspiration.com/uploads/1/3/0/7/130738499/derume.pdf
    • http://ziliseku.more-cb.com/uploads/1/3/1/6/131637136/5750031.pdf
    • http://files.heathermfoster.com/uploads/1/3/1/8/131856318/8761396.pdf
    • https://cdn.shopify.com/s/files/1/0431/9212/3560/files/lezekafefemo.pdf
    • https://cdn.shopify.com/s/files/1/0432/2312/2077/files/12501998260.pdf
    • https://cdn.shopify.com/s/files/1/0440/7613/8648/files/pamiwezufigakutobogojisi.pdf
    • https://cdn.shopify.com/s/files/1/0427/9818/6652/files/zegagobo.pdf
    • https://cdn.shopify.com/s/files/1/0437/6759/5165/files/sunken_treasure_wow_classic.pdf
    • https://cdn.shopify.com/s/files/1/0431/1128/4893/files/76569427895.pdf
    • https://cdn.shopify.com/s/files/1/0428/1643/8438/files/40702204269.pdf
    • https://cdn.shopify.com/s/files/1/0432/0867/1394/files/bebar.pdf
    • https://cdn.shopify.com/s/files/1/0435/5004/8420/files/13934291608.pdf
    • https://cdn.shopify.com/s/files/1/0435/9946/2558/files/apprendre_l_criture_arabe.pdf
    • https://cdn.shopify.com/s/files/1/0428/2921/7958/files/jujobivegubijelugamu.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_off0000679a.bin
c7a76006f8651ca98491db5f36c6f67a0360d93166e31f78ce20d6b1af457326		 pdf-font-stream PDF embedded font (sfnt) at offset 0x679A 5632 bytes
font_01_sfnt_off00007aad.bin
894e8489712020887a94b0a38b51d9b6b0c7007da6457ae871e33d9cb9e7ef2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AAD 10420 bytes

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