Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbb8d966b6202eab…

MALICIOUS

PDF

48.7 KB Created: 2020-08-26 14:04:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7eee5efd1547fab960d4d7a2ca4e66eb SHA-1: 42771d4dd6826f755f68ac82dee250219ae3019b SHA-256: dbb8d966b6202eab10f6a88bde2259be18273dcd1d9c9d4767e7c2f9f10d4668
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic identifying it as a PDF link farm. Another heuristic flags a link to a known malicious redirector. The document body contains obfuscated text and a URL that appears to be part of the link farm. The primary intent seems to be SEO manipulation or redirection to malicious sites.

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=fly+away+home+music
    • http://jeturoluf.allthingssweetandcandy.co.uk/uploads/1/3/1/3/131383309/b91c39e913c.pdf
    • http://mijoz.savannahconcretecontractors.com/uploads/1/3/0/7/130776485/rizivul_vegop_jixujutolaz_repetuvifew.pdf
    • http://mobotaf.gregwingtrumpet.com/uploads/1/3/0/8/130874493/3607388.pdf
    • http://files.johngreinerferris.com/uploads/1/3/2/3/132303270/afc8fdfecd7.pdf
    • http://files.travelingsauna.com/uploads/1/3/0/8/130813357/zowug_xonobatisobarov.pdf
    • https://cdn.shopify.com/s/files/1/0433/6893/9672/files/tikiwivowosopamulerevaxid.pdf
    • https://cdn.shopify.com/s/files/1/0437/3217/2965/files/vufolazodatupadi.pdf
    • https://cdn.shopify.com/s/files/1/0434/0118/3384/files/1990781490.pdf
    • https://cdn.shopify.com/s/files/1/0435/4742/6971/files/tipos_de_asepsia_y_antisepsia.pdf
    • https://cdn.shopify.com/s/files/1/0431/6138/7170/files/wogalabovede.pdf
    • https://cdn.shopify.com/s/files/1/0433/3964/5093/files/spreadsheet_for_tracking_household_expenses.pdf
    • https://cdn.shopify.com/s/files/1/0437/6811/9448/files/careless_whisper_tab.pdf
    • https://cdn.shopify.com/s/files/1/0436/4953/2069/files/27501591545.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/riwemabosemuridaredexe.pdf
    • https://cdn.shopify.com/s/files/1/0432/7201/1941/files/brownian_motion_finance.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_off00005069.bin
1b7d1b2535047d23ad830a48c778608c6cdc824f69a816a592eb5075bac331fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5069 15808 bytes
font_01_sfnt_off000082de.bin
63aea9655651307a1d10f7885609e82d7f4e264725c1fb4c493d8b02ddc2de5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82DE 5092 bytes
font_02_sfnt_off0000942b.bin
59ca77f161229b9b102113dd4c847cfaa3088077e4586dca977233f10d3abf97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x942B 9796 bytes

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