Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9e0441110d97392…

MALICIOUS

PDF

41.6 KB Created: 2020-08-21 03:29:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 714832d911cf7671a687bb6ead99d321 SHA-1: a4a1a894a6b646ebc5adef231fb0121d63a484ac SHA-256: f9e0441110d973927939834472664c8d0643877bfc3779379e82c99359e78411
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific URL pointing to a redirector, disguised as an 'Entergy power outages report'. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the malicious nature of the redirector. The document body, though heavily obfuscated, contains the text 'Entergy power outages report' and the malicious URL, reinforcing the lure. The presence of numerous external PDF links suggests an attempt to manipulate search engine results or distribute further 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=entergy+power+outages+report
    • http://files.creativeplansandservices.com/uploads/1/3/0/7/130738915/aa4d9.pdf
    • https://cdn.shopify.com/s/files/1/0428/3059/4204/files/13108248944.pdf
    • https://cdn.shopify.com/s/files/1/0432/6057/5899/files/xezavafuni.pdf
    • https://cdn.shopify.com/s/files/1/0438/9090/1144/files/case_study_format_for_nursing_students.pdf
    • https://cdn.shopify.com/s/files/1/0432/5185/9611/files/65049282694.pdf
    • https://cdn.shopify.com/s/files/1/0429/8375/1831/files/29794338786.pdf
    • https://cdn.shopify.com/s/files/1/0434/1334/0316/files/home_cleaners_template.pdf
    • https://cdn.shopify.com/s/files/1/0450/2791/7974/files/get_list_of_worksheets_in_excel_workbook.pdf
    • https://cdn.shopify.com/s/files/1/0431/1344/7577/files/xiziwedoxanokixevogoz.pdf
    • https://cdn.shopify.com/s/files/1/0435/1908/2651/files/tiwanaxumoruwifu.pdf
    • https://cdn.shopify.com/s/files/1/0431/1416/8480/files/giduriji.pdf
    • https://cdn.shopify.com/s/files/1/0430/3273/9989/files/lineman_and_cableman_s_handbook_download.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_off0000634a.bin
c913745d586d6f9756a135fc31ea5bc1495368e623cfa5e8081b04bea7a4fb1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x634A 5104 bytes
font_01_sfnt_off000074d0.bin
81353d02f3d80853f2ed0e5501e79f8a484e6723b308a6035cd6931b59c925e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74D0 10860 bytes

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