Malicious PDF — malware analysis report

Static analysis result for SHA-256 28f93e38bdc4a114…

MALICIOUS

PDF

44.4 KB Created: 2020-09-20 04:11:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 916721b38f40eb6eb89da5342cfd0780 SHA-1: b0d409dfb142aa8b818e768002d9c86793f8d171 SHA-256: 28f93e38bdc4a11413a3e99fb19842b1dd715154a3d7d9c3f310bac703875fdb
128 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.club/wix?keyword=soccer+star+2017+apk+download'. Another critical heuristic identified a PDF link farm, indicating an attempt to distribute or link to numerous external PDF files, such as 'http://files.wooferseu.com/uploads/1/3/2/7/132740987/b3ac4ec29dea.pdf'. The presence of a visual download button lure further supports the malicious intent.

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.club/wix?keyword=soccer+star+2017+apk+download
    • http://files.wooferseu.com/uploads/1/3/2/7/132740987/b3ac4ec29dea.pdf
    • http://rofudel.tomhelp.us/uploads/1/3/1/0/131070442/0e9d34bb3.pdf
    • http://files.unwhomecoming.com/uploads/1/3/2/6/132681579/df8d128f88.pdf
    • https://979f3529-5265-424f-bbac-4a0aee3ea016.filesusr.com/ugd/de3d83_77b82cb4a648420180e03a3e4cd4ee71.pdf?index=true
    • https://fce6a391-f201-4add-961e-2519cdd42bb3.filesusr.com/ugd/24d943_a7d92021f8c74e448986134a33959fde.pdf?index=true
    • https://b07868ee-7128-4a8b-88cb-a4f0703e763f.filesusr.com/ugd/6f9b04_72ac98797b524ec28d336c1338866d6c.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0433/6451/5994/files/sefcor_catalog.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/59022585862.pdf
    • https://cdn.shopify.com/s/files/1/0433/9564/5589/files/14602823613.pdf
    • https://cdn.shopify.com/s/files/1/0435/5663/4787/files/spiderman_games_for_laptop.pdf
    • https://cdn.shopify.com/s/files/1/0430/6819/4978/files/samuloni.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_off000060b2.bin
3a32893ec7603bb66c98e09eb835d1c1a9a087bd34bb627292a360236893b486
pdf-font-stream PDF embedded font (sfnt) at offset 0x60B2 5472 bytes
font_01_sfnt_off00007365.bin
3acac5a7f4d11ea8929496d150061d2ac8c6c9796d085e80c50268e8e5fa8bcd
pdf-font-stream PDF embedded font (sfnt) at offset 0x7365 10356 bytes
font_02_sfnt_off000096cf.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x96CF 4324 bytes