Malicious PDF — malware analysis report

Static analysis result for SHA-256 d005beaa4129ed02…

MALICIOUS

PDF

40.4 KB Created: 2020-08-19 17:48:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4b373db38660ef381593e2d15853389f SHA-1: c1d3dec468233f66d3f819282c18aab534dcd5dc SHA-256: d005beaa4129ed02e83b0a039e464c766e7bf5e5b2a2c2eacf5a6f11f11b270f
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=performance+appraisal+used+in+a+sentence'. Additionally, it exhibits characteristics of a link farm, with numerous embedded links to external PDFs, including one hosted on 'mumube.sunminpark.com'. The document body, though heavily obfuscated, contains the same redirector URL, suggesting the primary intent is to drive traffic to malicious sites.

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=performance+appraisal+used+in+a+sentence
    • http://mumube.sunminpark.com/uploads/1/3/1/4/131437145/dogozavufuni-tesuwibojo-mipijitu-jibujen.pdf
    • https://cdn.shopify.com/s/files/1/0450/2195/4206/files/banking_and_financial_awareness_mcq.pdf
    • https://cdn.shopify.com/s/files/1/0435/1698/5503/files/manosuwexepikagomexibo.pdf
    • https://cdn.shopify.com/s/files/1/0438/8909/8907/files/why_wont_league_open_on_mac.pdf
    • https://cdn.shopify.com/s/files/1/0429/1543/0553/files/sukekeraxogoxerusan.pdf
    • https://cdn.shopify.com/s/files/1/0449/2178/2427/files/github_os_x.pdf
    • https://cdn.shopify.com/s/files/1/0431/8652/0224/files/28827214322.pdf
    • https://cdn.shopify.com/s/files/1/0429/4000/6559/files/70383502118.pdf
    • https://cdn.shopify.com/s/files/1/0431/9094/3904/files/60288109458.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_off000061af.bin
18332d25d54193a3a9135336a98d2c02efe241b818cd313f192e243d2f2bb1fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61AF 5300 bytes
font_01_sfnt_off00007390.bin
030b799d746282ef082d242487e14f5503d08a10f9dcdce2f15302d2f2089fbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7390 9776 bytes

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