Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dbb1d56cc3bca40…

MALICIOUS

PDF

38.3 KB Created: 2020-08-23 00:31:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fed201510148b0d5894b0086f7ba67ea SHA-1: 9e966aad6575b3de2a6465885388799b7feae086 SHA-256: 3dbb1d56cc3bca4020fcadd555b49c2cbc83ab1da54cd4d5ea57a7069a139eb4
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one specifically identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting an attempt to manipulate search engine results or distribute malicious content. The primary malicious URL identified is https://ttraff.ru/pify?keyword=answer+me+lyrics+ishawna. No scripts were extracted, limiting the analysis of direct execution capabilities.

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.ru/pify?keyword=answer+me+lyrics+ishawna
    • http://nirozeg.mikecurtisfootball.com/uploads/1/3/1/4/131453323/nudebir.pdf
    • http://sapegepa.celticknot1000.com/uploads/1/3/1/1/131164250/guvifuxasibume.pdf
    • http://mamab.fiberistas.com/uploads/1/3/2/6/132681352/988550.pdf
    • http://files.tabithafitness.com/uploads/1/3/1/3/131398177/vekabufapuwul_migaxisimup_bajoto.pdf
    • http://files.dahliastudio.com/uploads/1/3/1/3/131381003/saviradovajanes.pdf
    • https://cdn.shopify.com/s/files/1/0429/7654/2873/files/87334135120.pdf
    • https://cdn.shopify.com/s/files/1/0430/9444/2137/files/cadillac_escalade_2020_brochure.pdf
    • https://cdn.shopify.com/s/files/1/0450/4797/1990/files/cset_multiple_subject.pdf
    • https://cdn.shopify.com/s/files/1/0431/4205/4048/files/kijuwan.pdf
    • https://cdn.shopify.com/s/files/1/0435/3127/2346/files/zojabiwalipovuvub.pdf
    • https://cdn.shopify.com/s/files/1/0428/6539/3820/files/pugafitisevizagupuke.pdf
    • https://cdn.shopify.com/s/files/1/0435/8085/0335/files/41949178332.pdf
    • https://cdn.shopify.com/s/files/1/0439/1947/4856/files/xibamizomipuwidotowofax.pdf
    • https://cdn.shopify.com/s/files/1/0429/8843/7655/files/xumavakorodofede.pdf
    • https://cdn.shopify.com/s/files/1/0433/5481/6667/files/discord_delete_dm_messages.pdf
    • https://cdn.shopify.com/s/files/1/0429/6281/3084/files/warixinovokafamula.pdf
    • https://cdn.shopify.com/s/files/1/0436/1977/8720/files/probability_worksheets_7th_grade_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/9726/0192/files/xebixawimiwelulolegezazij.pdf
    • https://cdn.shopify.com/s/files/1/0433/8856/7706/files/82218846887.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/
    • https://cdn.shopify.com/s/files/1/0430/9726/0192/files

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000584a.bin
7d5c8ffea2e89873a1526a92ad8fd58cb099aa79fea2e6ae127daa2c1480c2c7
pdf-font-stream PDF embedded font (sfnt) at offset 0x584A 5220 bytes
font_01_sfnt_off000069e3.bin
b1ff248b0d0d9ab70a1ed5ee14e34af3a37373a6294d13cf9131ead4fbd09eb0
pdf-font-stream PDF embedded font (sfnt) at offset 0x69E3 10032 bytes