Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6171248e618ba3e…

MALICIOUS

PDF

34.7 KB Created: 2020-09-07 11:31:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d3ee1ff28dc199804ff107259cfeec7f SHA-1: cbfef2105c012815641ffbb9da848d211a974006 SHA-256: c6171248e618ba3e9665386bcb47cf0d8e6d1f6bc6aa068c231298126d83d87a
128 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, which is further supported by the presence of a visual download button lure. The document body, though heavily obfuscated, contains the malicious URL. The primary intent appears to be directing the user to a malicious site via a deceptive link.

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.me/wix?keyword=leaflet+template+microsoft+publisher
    • https://cdn.shopify.com/s/files/1/0430/4620/7637/files/powako.pdf
    • https://cdn.shopify.com/s/files/1/0434/4519/0821/files/82538491874.pdf
    • https://cdn.shopify.com/s/files/1/0433/8289/8839/files/45174128787.pdf
    • https://cdn.shopify.com/s/files/1/0429/5848/7703/files/detigiwip.pdf
    • https://cdn.shopify.com/s/files/1/0441/3220/4696/files/topirirejopifikiv.pdf
    • https://static.usrfiles.com/ugd/a31856_da9eff7fb7164e68a14d642d23329fe0.pdf
    • https://static.usrfiles.com/ugd/67f5f7_1240699ca0f04c1d944a516951b08647.pdf
    • https://static.usrfiles.com/ugd/d9d1f5_aeeee936379344ecbf336c4b93be5d6f.pdf
    • https://static.usrfiles.com/ugd/5c9621_ce87e4264cad4b0c807f4738392cb4e3.pdf
    • https://static.usrfiles.com/ugd/6da380_2ac116415feb496989771d7b29c6e2a2.pdf
    • https://static.usrfiles.com/ugd/229b11_68bed9c641934db9952d4f5f7523d274.pdf
    • https://static.usrfiles.com/ugd/8b4172_70bc87fdfd0346259eb81effb06ae4d6.pdf
    • https://static.usrfiles.com/ugd/defcb2_85f53eaaac334fc2880d55780e5f17a6.pdf
    • https://static.usrfiles.com/ugd/253000_af6b3bf4841a470fb4fff912cac3f780.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_off00004be4.bin
1d889a261955e9ccda6a2b5308df3d53191770524b2cbbe1a6d896e8700ba5a5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BE4 5336 bytes
font_01_sfnt_off00005dde.bin
675785a8cb9590cb4228d05d6eecb68adbf935b140e59fdb7c01e5243f219a3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DDE 9320 bytes

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