Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbca1985b87e188b…

MALICIOUS

PDF

48.2 KB Created: 2020-07-22 10:57:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f0e2352fd2cec15deb4c9794ce662c7 SHA-1: 7e810370e1760f9d2c55fc48c86b110589fb3e50 SHA-256: fbca1985b87e188bb4c3d0d5c4bb7748d7ea6c3c136ec597f99e67c2dfc07ee0
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to a 'ccna cyber ops guide pdf'. The presence of multiple external links, including a link farm, indicates a strong intent to redirect users to potentially harmful content. The file's structure and link farm behavior are consistent with techniques used for phishing or distributing further malware.

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=ccna+cyber+ops+guide+pdf
    • http://files.ryanstaudacher.com/uploads/1/3/0/7/130739490/4073102.pdf
    • http://files.challengethewind.org/uploads/1/3/2/6/132695730/4477159.pdf
    • http://files.shawnpurvis.com/uploads/1/3/1/4/131482988/dikike.pdf
    • http://files.voxnsccp.com/uploads/1/3/0/9/130969489/3758575.pdf
    • http://files.planninginblackandwhite.com/uploads/1/3/2/7/132710655/bobuzugipiz_renele_litazafurusagop.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53293114795.pdf
    • https://cdn.shopify.com/s/files/1/0432/8787/1646/files/zepelofagugofa.pdf
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/velavufapalulodeguxoj.pdf
    • https://cdn.shopify.com/s/files/1/0435/7111/8235/files/46676713685.pdf
    • https://cdn.shopify.com/s/files/1/0431/9451/5614/files/4953869207.pdf
    • https://zibagepuj.files.wordpress.com/2020/07/99367071490.pdf
    • https://gozinogix.files.wordpress.com/2020/06/14302634053.pdf
    • https://rojevaliri.files.wordpress.com/2020/07/17083869538.pdf
    • https://cdn.shopify.com/s/files/1/0430/3316/5986/files/57947880728.pdf
    • https://cdn.shopify.com/s/files/1/0429/5933/9674/files/41535486684.pdf
    • https://cdn.shopify.com/s/files/1/0431/2173/7882/files/notomel.pdf
    • https://cdn.shopify.com/s/files/1/0427/6482/8838/files/1657552650.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2791/files/80861594412.pdf
    • https://cdn.shopify.com/s/files/1/0430/2071/4137/files/jasadabutegoreja.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0528/files/11715586129.pdf
    • https://cdn.shopify.com/s/files/1/0433/4069/3662/files/52411201393.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_off00007bf0.bin
443a829066c822baa5b1e52c5de172ec558278e816f1ab6ecc541e67455a36b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BF0 5360 bytes
font_01_sfnt_off00008e27.bin
e7d8735b25bf391f435d4fc72c81e65ddc6d19f90ce854128dbcb0f1c91ebdde		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E27 10856 bytes

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