Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd42e25d116d3e10…

MALICIOUS

PDF

44.1 KB Created: 2020-08-23 08:59:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3bd6183078bfeb44f5253b57b579e0bf SHA-1: de007d53e52e2b631f1bf940d0a5ca87f3881857 SHA-256: cd42e25d116d3e10244f736bb7ad9f762f0027b2f776e5f978ea725e8be5ddac
128 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is used in conjunction with a SEO link farm lure. The document body text mentions 'Critical path template excel free', reinforcing the lure. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or exploitation.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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.com/pify?keyword=critical+path+template+excel+free
    • http://files.chargedparticles.com/uploads/1/3/0/8/130814295/1675446.pdf
    • http://files.onceuponadreamllc.com/uploads/1/3/1/4/131438176/3501dff3e0d5.pdf
    • http://files.aj-marketing.co.uk/uploads/1/3/1/8/131858916/mixiwovuk_zovopigane_zuxowe_vaxetitutawig.pdf
    • http://wekadi.vailvalleybaptistchurch.org/uploads/1/3/1/3/131381806/71e8939351b.pdf
    • https://cdn.shopify.com/s/files/1/0431/1246/4535/files/sutir.pdf
    • https://cdn.shopify.com/s/files/1/0434/2788/9308/files/sear_craftsman_garage_door_opener_manual.pdf
    • https://cdn.shopify.com/s/files/1/0436/0539/3571/files/sukoso.pdf
    • https://cdn.shopify.com/s/files/1/0440/8344/5925/files/sanitary_fixtures.pdf
    • https://cdn.shopify.com/s/files/1/0435/9464/5672/files/upsc_mains_blank_answer_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0429/3279/7599/files/50652149298.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/lady_gaga_the_fame_monster_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0434/5305/5128/files/vajomogesitavidu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0097/8853/files/zepasuvami.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_off000064ce.bin
9a488e38bed1614b770bee2f3fcf9068edb80151699a1a6ef2183f9e7a398fad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64CE 4740 bytes
font_01_sfnt_off000074ec.bin
2d136ac4a5ee7d42237d64231fbcb95796a9a1b5de24c9bf4e880e1689f4d707		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74EC 9540 bytes
font_02_sfnt_off0000956b.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x956B 4324 bytes

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