Malicious PDF — malware analysis report

Static analysis result for SHA-256 a03aa9125e17f9fc…

MALICIOUS

PDF

60.9 KB Created: 2020-08-25 02:01:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8eb437ee436d15a3100f148b7951f7e0 SHA-1: 0725443a78e561752f5334b2a54dd68d9f11a69b SHA-256: a03aa9125e17f9fcec4aff417202d439f53a9730093471b94d67701f2e72a8b8
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a direct link to a known malicious redirector, ttraff.ru. The document body, though heavily obfuscated, contains the same URL and keywords related to a popular song and game, suggesting a lure. The presence of multiple links to external PDFs hosted on various domains indicates a link farm designed to obscure the ultimate destination and potentially spread malicious content.

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=crab+rave+roblox+piano+sheet
    • http://files.adventistedenslanding.com/uploads/1/3/1/6/131636914/3047685.pdf
    • http://files.aukidesigns.com/uploads/1/3/2/7/132712088/fapuvu.pdf
    • http://files.beaconcoachingandtraining.com/uploads/1/3/0/9/130969424/lepeba.pdf
    • http://files.spotlightct.org/uploads/1/3/2/6/132681992/9896649.pdf
    • https://cdn.shopify.com/s/files/1/0434/8562/6520/files/amma_bhagavan_songs.pdf
    • https://cdn.shopify.com/s/files/1/0429/4829/6863/files/mowagemanefe.pdf
    • https://cdn.shopify.com/s/files/1/0429/4384/0412/files/bronkitis_pdpi.pdf
    • https://cdn.shopify.com/s/files/1/0438/1776/2973/files/cells_and_tissues_chapter_3.pdf
    • https://cdn.shopify.com/s/files/1/0440/5306/9974/files/electronics_and_communication_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/8050/6785/files/ejercicios_con_adverbios_de_frecuencia.pdf
    • https://cdn.shopify.com/s/files/1/0440/5261/1222/files/pluralisme_indonesia.pdf
    • https://cdn.shopify.com/s/files/1/0433/9017/3333/files/widusasezivizigimulagu.pdf
    • https://cdn.shopify.com/s/files/1/0433/1867/3566/files/51278650043.pdf
    • https://cdn.shopify.com/s/files/1/0429/3646/7623/files/calculation_formula_in_excel.pdf
    • https://cdn.shopify.com/s/files/1/0434/1471/6572/files/ardhanareeswara_stotram_in_telugu_download.pdf
    • https://cdn.shopify.com/s/files/1/0450/2798/3510/files/the_alabaster_girl_file.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009b58.bin
478bf552bb58932f4e42198c45726b5bcbf7491261fe79eb3141529204f365f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B58 5080 bytes
font_01_sfnt_off0000ac99.bin
c21562310a2a0a26f7171a8aad8ace780f6b03a0fe492a7e573eca54042958ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC99 18044 bytes

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