Malicious PDF — malware analysis report

Static analysis result for SHA-256 3562673deeb5a0eb…

MALICIOUS

PDF

43.0 KB Created: 2020-08-09 08:01:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90efd2a531551544512806e6b40e5525 SHA-1: 05be58802c381f63baa6b175a889de774225a8d5 SHA-256: 3562673deeb5a0ebe74d815de2ec06f7a00cb1afc7c11fb2466f05a96a4ea861
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains a link that redirects to a known malicious domain, disguised as a download for "Java programming notes pdf for bca". The PDF also contains a large number of external links, many of which point to Shopify domains, suggesting a link farm for SEO manipulation to attract victims. 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.cc/pify?keyword=java+programming+notes+pdf+for+bca
    • http://files.hoggiesnetball.com.au/uploads/1/3/0/8/130874633/ad9f57d14d0.pdf
    • http://wojasa.chynajones.com/uploads/1/3/2/7/132710712/zumikagawewizikasuko.pdf
    • http://files.pcestaskforce.org/uploads/1/3/2/6/132682882/7c09d49e7e4.pdf
    • https://cdn.shopify.com/s/files/1/0439/8225/8334/files/46914491279.pdf
    • https://cdn.shopify.com/s/files/1/0440/8950/7990/files/architectural_perspective_drawing_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0430/8277/6729/files/rodofuwe.pdf
    • https://cdn.shopify.com/s/files/1/0429/6808/8742/files/mijefebobewikikelexusa.pdf
    • https://cdn.shopify.com/s/files/1/0428/4842/0007/files/kitususifazulomuwisumoxa.pdf
    • https://cdn.shopify.com/s/files/1/0431/8140/8420/files/xafumu.pdf
    • https://cdn.shopify.com/s/files/1/0436/4782/8133/files/ap_inter_1st_year_sanskrit_text_book_2020.pdf
    • https://cdn.shopify.com/s/files/1/0436/3137/8590/files/management_aptitude_test_sample_papers.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/31591757642.pdf
    • https://cdn.shopify.com/s/files/1/0431/1184/1949/files/64987257913.pdf
    • https://cdn.shopify.com/s/files/1/0431/7570/6788/files/datun.pdf
    • https://cdn.shopify.com/s/files/1/0430/3532/8663/files/bitupodipob.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/serananovuja.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_off00006974.bin
08bd4c2dfd3698a0b28699dbc1182e240a183bc045a254683746c46d95da4c43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6974 5632 bytes
font_01_sfnt_off00007c8d.bin
ba9a9211e616d17b1cdb0ab0b3bb545a1facb1ef22d314376f6208f2b3b4b465		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C8D 9992 bytes

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