Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc9ce98a61f4a082…

MALICIOUS

PDF

49.5 KB Created: 2020-08-13 11:25:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e01d68c142f2016db11c31e6e8fce54 SHA-1: 2003824bf1e43f8b6b0ab890d3e54f96bf260c0b SHA-256: cc9ce98a61f4a08236a613d2c7d0ecb032c1033719cd7cd0c6a5cb1d03fc349e
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains but ultimately redirect to a known malicious URL (ttraff.cc). This indicates a link farm or redirection attack designed to lead users to malicious content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wb?keyword=cumarina%20bula%20pdf
    • http://nivuvavi.dbworldphoto.com/uploads/1/3/0/9/130969656/4837748.pdf
    • http://files.mumandmini.com/uploads/1/3/1/6/131606815/fotabudilixixe.pdf
    • http://files.communitybaptistcoldlake.com/uploads/1/3/2/6/132683142/nowulipuge.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85450973079.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/goxosazamuzibisanis.pdf
    • https://cdn.shopify.com/s/files/1/0437/4944/1687/files/hematology_ebook.pdf
    • https://cdn.shopify.com/s/files/1/0436/6876/6873/files/kafifodatafutegu.pdf
    • https://cdn.shopify.com/s/files/1/0434/2113/9096/files/beyond_compare_comparison.pdf
    • https://cdn.shopify.com/s/files/1/0431/7508/4193/files/murawuboxetodasuruko.pdf
    • https://cdn.shopify.com/s/files/1/0434/3064/1826/files/tusosuzud.pdf
    • https://cdn.shopify.com/s/files/1/0431/7465/8216/files/80594265675.pdf
    • https://cdn.shopify.com/s/files/1/0447/6259/5477/files/cardiology_practical_handbook.pdf
    • https://cdn.shopify.com/s/files/1/0429/2644/0607/files/kezulewafu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2024/7462/files/releg.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1261535930.pdf
    • https://cdn.shopify.com/s/files/1/0435/8216/1053/files/absorcion_de_vitaminas_hidrosolubles_y_liposolubles.pdf
    • https://cdn.shopify.com/s/files/1/0433/6458/1525/files/70361748807.pdf
    • https://cdn.shopify.com/s/files/1/0430/1688/0281/files/mobeduxoforebabexisatar.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_off00006f32.bin
bf3277850d6f80f8cf2fd55e6547078f956b5e4e8943ff353a400f941ea38453
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F32 4748 bytes
font_01_sfnt_off00007f18.bin
f547fe94ec259a9af84a7ffd748030fe722cd41db084981430895e97d75bb542
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F18 14112 bytes
font_02_sfnt_off0000a921.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0xA921 4324 bytes