Malicious PDF — malware analysis report

Static analysis result for SHA-256 d975a57ae01649e1…

MALICIOUS

PDF

44.2 KB Created: 2020-08-01 15:10:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2a822f31fcc771dbbaf8ad2bd1e442f9 SHA-1: c031865aebb9b79e77e9274ca4aef244db51093a SHA-256: d975a57ae01649e138d8ee90434594bcdf384be4729a42595414d0aa7ab3f57c
130 Risk Score

Malware Insights

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

The PDF contains a deceptive document body and numerous embedded links, including one identified as a malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags the URL https://ttraff.ru/pify?keyword=how+to+recover+unsaved+word+document+2016 as malicious. The PDF_SEO_LINK_FARM heuristic indicates a large number of links, likely for SEO manipulation or to obscure the malicious destination. The presence of a 'download button' lure further supports a phishing or social engineering attack pattern.

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.ru/pify?keyword=how+to+recover+unsaved+word+document+2016
    • http://files.plainfieldfarmersfair.com/uploads/1/3/1/1/131163635/8667f.pdf
    • http://files.mylighthouselearning.com/uploads/1/3/1/4/131407227/fojate.pdf
    • http://files.xinzhangdesign.com/uploads/1/3/0/8/130874594/bomuponagojipijakisa.pdf
    • https://cdn.shopify.com/s/files/1/0432/3423/0429/files/vimexus.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/12796272196.pdf
    • https://cdn.shopify.com/s/files/1/0434/4699/3063/files/53576181001.pdf
    • https://cdn.shopify.com/s/files/1/0431/7147/9713/files/jupijimefunokalonox.pdf
    • https://cdn.shopify.com/s/files/1/0433/7372/3800/files/73194030663.pdf
    • https://cdn.shopify.com/s/files/1/0430/6462/3265/files/38526300944.pdf
    • https://cdn.shopify.com/s/files/1/0429/5753/7439/files/31882749846.pdf
    • https://cdn.shopify.com/s/files/1/0433/6661/3141/files/48618538380.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/57617730999.pdf
    • https://cdn.shopify.com/s/files/1/0431/5077/0333/files/55820580827.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tipibag.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93616534700.pdf
    • https://cdn.shopify.com/s/files/1/0440/0565/4678/files/butasawowagisejut.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006116.bin
9c229a4c20188d3afcff684f9dd50e379938e7460cd984365abfbf1c89b08c19
pdf-font-stream PDF embedded font (sfnt) at offset 0x6116 5480 bytes
font_01_sfnt_off000073ae.bin
90ee43d5185d1f9dcee007366d044382e6bc41cb19cce11c6fb32f390f9f1142
pdf-font-stream PDF embedded font (sfnt) at offset 0x73AE 9928 bytes
font_02_sfnt_off0000959c.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x959C 4324 bytes