Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c4e238a9015a155…

MALICIOUS

PDF

48.6 KB Created: 2020-07-30 17:49:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d5bed37ae812afab34f4c05a18922c52 SHA-1: 3992267d0b26af715581b1ed2c018e0c5062772c SHA-256: 4c4e238a9015a155d7011487ee424cd6f00fc7e69a11b3fe1671b98402e8d7d7
128 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, disguised as a result download. It also hosts a large number of external PDF links, many pointing to Shopify, suggesting a link farm or SEO abuse tactic. The presence of a 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.cc/pify?keyword=afcat+2+2020+result+download+pdf
    • http://files.thefraternalsociety.org/uploads/1/3/1/8/131856627/9299b6.pdf
    • http://files.silvastudioart.com/uploads/1/3/1/3/131383727/c2b014a40.pdf
    • http://files.mtsacjazz.com/uploads/1/3/2/7/132740296/9120136.pdf
    • http://files.kidsonuptherapy.com/uploads/1/3/0/7/130776225/552692bc58bd.pdf
    • https://cdn.shopify.com/s/files/1/0429/8270/3257/files/89515109362.pdf
    • https://cdn.shopify.com/s/files/1/0430/6301/7629/files/ronigusanasetuwagis.pdf
    • https://cdn.shopify.com/s/files/1/0436/0136/3107/files/bukefutiguritaxizaz.pdf
    • https://cdn.shopify.com/s/files/1/0429/3397/7247/files/94676201762.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pizegavegip.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vixegenosevisime.pdf
    • https://cdn.shopify.com/s/files/1/0431/2779/9969/files/92845894713.pdf
    • https://cdn.shopify.com/s/files/1/0437/3915/2536/files/zokamexitapipo.pdf
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/58838047427.pdf
    • https://cdn.shopify.com/s/files/1/0439/0515/5224/files/32675148104.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_off0000807a.bin
c8c63a42e8c3a1388df470a8f6fd269e1b91e63f9574bde9e297fb65d9befb62		 pdf-font-stream PDF embedded font (sfnt) at offset 0x807A 5336 bytes
font_01_sfnt_off000092b3.bin
05394ea01a0adbd6bf479b7f848e6295cdd94bbc1e507b2d52a5af73e532bac1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92B3 10212 bytes

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