Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5196e4c9f6f060a…

MALICIOUS

PDF

52.3 KB Created: 2020-08-23 17:10:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 97e60028e30e566724019a13cd6f6ba7 SHA-1: 9c50f4da5702849f434e147af0ab0abc9fc762ba SHA-256: b5196e4c9f6f060aef2fd287e50eaf541d7198410297b85ca2783a4019357e42
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.cc, which is designed to lead users to malicious sites. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources, many of which are hosted on Shopify. The presence of the 'yellow belt project template' in the URL suggests a lure to entice users to click. The ML classifier 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/pify?keyword=yellow+belt+project+template
    • http://files.kimberlyjherb.com/uploads/1/3/1/4/131407734/6aaa27c09255.pdf
    • http://files.piltzfamily.waggamatters.com/uploads/1/3/1/8/131871912/wijudox.pdf
    • http://files.micahblackarts.com/uploads/1/3/1/1/131164076/donisazufazefe_pazebaxi.pdf
    • http://files.sweetpotatopiedesigns.com/uploads/1/3/1/3/131380870/7882968.pdf
    • https://cdn.shopify.com/s/files/1/0437/7722/8957/files/12778655393.pdf
    • https://cdn.shopify.com/s/files/1/0435/9074/6267/files/zotutajatizetu.pdf
    • https://cdn.shopify.com/s/files/1/0434/2788/9302/files/royalty_free_music_to_itunes.pdf
    • https://cdn.shopify.com/s/files/1/0431/9041/9616/files/53914977213.pdf
    • https://cdn.shopify.com/s/files/1/0435/1324/9946/files/22996668906.pdf
    • https://cdn.shopify.com/s/files/1/0430/8942/8637/files/denemakerujuzatojosexo.pdf
    • https://cdn.shopify.com/s/files/1/0440/6909/3541/files/lizokomowokusudozokal.pdf
    • https://cdn.shopify.com/s/files/1/0438/9571/8040/files/45496698754.pdf
    • https://cdn.shopify.com/s/files/1/0432/2269/6098/files/42414300096.pdf
    • https://cdn.shopify.com/s/files/1/0429/6966/1589/files/24677140866.pdf
    • https://cdn.shopify.com/s/files/1/0437/6097/6021/files/tiwatixuzonebixilotukos.pdf
    • https://cdn.shopify.com/s/files/1/0433/9597/3276/files/15107953911.pdf
    • https://cdn.shopify.com/s/files/1/0431/6643/3435/files/board_of_directors_powerpoint_template.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_off0000845e.bin
b7f317aa0f29cd34df008dc84d8f376d2685882a57a4a5cd0d86477d0adf885a
pdf-font-stream PDF embedded font (sfnt) at offset 0x845E 2828 bytes
font_01_sfnt_off00008e59.bin
7f0d1705be9f55a96ad29b84e195416ab3c17e99a345adb26dbbdc3cacf8c4a6
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E59 5168 bytes
font_02_sfnt_off00009fe8.bin
5f8a9f7dd95b89c5ea112787e96c7e2acfc49f300c04d8b6fe9605e091c7f0b3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9FE8 9984 bytes