Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d9b93a19bba55fa…

MALICIOUS

PDF

41.3 KB Created: 2020-08-05 14:44:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 484cf96c45e32ffbb77ad059350714ec SHA-1: 50ec684b2aeb6cc25a96302ca25c050c49780ce7 SHA-256: 2d9b93a19bba55fa6495b561118e20a2a39a91a3bc016e0313907fc2ac45d2d2
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to learning English and the malicious URL. The PDF_SEO_LINK_FARM heuristic suggests the document is part of a larger effort to distribute malicious links. The primary malicious IOC is the redirector URL.

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=best+book+to+learn+english+speaking+pdf
    • http://files.lisetteblanco-cerda.org/uploads/1/3/0/7/130776823/sobonefukobaxejowapo.pdf
    • http://files.ef-art.net/uploads/1/3/0/8/130873790/vesori_xapemof_mabewejepebukez.pdf
    • http://files.jymshd.org/uploads/1/3/1/6/131637104/womibolibumufafegod.pdf
    • https://cdn.shopify.com/s/files/1/0428/9524/5475/files/37294811977.pdf
    • https://cdn.shopify.com/s/files/1/0434/1058/7800/files/15531386924.pdf
    • https://cdn.shopify.com/s/files/1/0433/9702/1854/files/75107148412.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/77363931764.pdf
    • https://cdn.shopify.com/s/files/1/0432/6657/2441/files/puzolibuxezosaxisikum.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wadilizesiwegokadokepub.pdf
    • https://cdn.shopify.com/s/files/1/0434/4276/5976/files/navejo.pdf
    • https://cdn.shopify.com/s/files/1/0439/2815/8363/files/piboxoketifevat.pdf
    • https://cdn.shopify.com/s/files/1/0433/3237/0584/files/55740926862.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuwuvedalolavotidexetugom.pdf
    • https://cdn.shopify.com/s/files/1/0429/2024/7462/files/99701355939.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_off00006318.bin
27dc11a0e105c0e58855319c8a5a7566305ec4d5580e3c194a1ae423a444a13e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6318 5556 bytes
font_01_sfnt_off000075f9.bin
35d66ad31f90e4d0b9d5f724bb113314a5800156ba3c8ad9da18d7c2e5c8c781		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75F9 10132 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.