Malicious PDF — malware analysis report

Static analysis result for SHA-256 e70f99a18c3e3a0a…

MALICIOUS

PDF

43.6 KB Created: 2020-08-14 16:45:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a37ab2499e11eb6abcf979863923a49 SHA-1: 529027740163157071c8bd5bd3cda04d2b92f5bf SHA-256: e70f99a18c3e3a0a77e8a32edba185525f1b4730340f8baa233986a35617cf18
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, many of which point to a link farm hosted on Shopify, designed to improve search engine rankings. One prominent link redirects to a malicious URL, 'https://ttraff.ru/pify?keyword=admission+form+2019.+raisoni.+net%252F+login', which likely serves as a lure for phishing or malware delivery. The document body, though heavily obfuscated, contains text related to an admission form and login, reinforcing the phishing pretext. The presence of multiple unknown URLs suggests a broad distribution effort.

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=admission+form+2019.+raisoni.+net%252F+login
    • http://pivefute.ibuyhousesga.com/uploads/1/3/1/0/131070581/pojisejubut-pipojezomipu-muwegaso.pdf
    • http://wodujuv.ejkilimanjaro.com/uploads/1/3/0/7/130740514/lelogegosovawi_tufelilisofixo_xewuzitobosoj_vipopevaf.pdf
    • http://files.nmcaahs.com/uploads/1/3/1/1/131164097/4b57be8915db129.pdf
    • http://files.happyponyworld.com/uploads/1/3/2/7/132740900/wekujo.pdf
    • https://cdn.shopify.com/s/files/1/0431/3038/8642/files/cacing_tanah.pdf
    • https://cdn.shopify.com/s/files/1/0437/0504/1051/files/95233243084.pdf
    • https://cdn.shopify.com/s/files/1/0431/0515/7284/files/kuvatalopujetidobagij.pdf
    • https://cdn.shopify.com/s/files/1/0430/2402/3715/files/austria_map.pdf
    • https://cdn.shopify.com/s/files/1/0440/5254/5701/files/catalogo_natura_ciclo_14_2020.pdf
    • https://cdn.shopify.com/s/files/1/0430/2848/0157/files/13344422383.pdf
    • https://cdn.shopify.com/s/files/1/0433/3171/5225/files/the_media_monopoly_ben_bagdikian.pdf
    • https://cdn.shopify.com/s/files/1/0427/4615/1078/files/52398496569.pdf
    • https://cdn.shopify.com/s/files/1/0433/6159/9656/files/socket_select_example.pdf
    • https://cdn.shopify.com/s/files/1/0430/9496/6429/files/begebulivepijupadi.pdf
    • https://cdn.shopify.com/s/files/1/0427/4028/5607/files/87205408217.pdf
    • https://cdn.shopify.com/s/files/1/0432/2089/3864/files/speaking_business_english_like_an_american.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_off00006916.bin
b9f2ffcc97be45de7754707f248d9921e8ca02ad1023e8a3074eb3058eb4095d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6916 5768 bytes
font_01_sfnt_off00007ca7.bin
31bc687513da2f9d8193efe5339a52d4ebaddd661f19215c10cb7dbef9aef877
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CA7 10752 bytes