Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed2d9027a22c85e6…

MALICIOUS

PDF

42.9 KB Created: 2020-08-18 16:39:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a98583aab69a194de492473bfa91c56 SHA-1: 5bd186ad76421a24eb1f67eaf45a77a70d7a7a83 SHA-256: ed2d9027a22c85e6f5e38f5c9d8a319070ecd2cb6e54d3c5cf459f40dbd3c1f5
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=glast+heim+minstrel+answers+king+schmitz' which is flagged as a malicious redirector. The presence of numerous other links, many pointing to PDF files on shopify.com, suggests a link farm designed to lure users to potentially harmful 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=glast+heim+minstrel+answers+king+schmitz
    • http://files.informaticrn.org/uploads/1/3/1/3/131382583/9354791.pdf
    • https://cdn.shopify.com/s/files/1/0432/2036/9567/files/the_apology_of_socrates_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/2002/4989/files/american_movies_2018.pdf
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/14379729578.pdf
    • https://cdn.shopify.com/s/files/1/0437/7598/3778/files/23885079037.pdf
    • https://cdn.shopify.com/s/files/1/0432/2417/0659/files/kircher_oedipus_aegyptiacus_english.pdf
    • https://cdn.shopify.com/s/files/1/0438/1035/7405/files/69203165625.pdf
    • https://cdn.shopify.com/s/files/1/0430/0773/8019/files/cute_for_mac.pdf
    • https://cdn.shopify.com/s/files/1/0433/2411/3049/files/hernia_inguinal_elsevier.pdf
    • https://cdn.shopify.com/s/files/1/0439/1639/4648/files/gijenewubiragiradisexazi.pdf
    • https://cdn.shopify.com/s/files/1/0429/5278/6074/files/53234879477.pdf
    • https://cdn.shopify.com/s/files/1/0431/8950/2110/files/advanced_excel_2020_formulas.pdf
    • https://cdn.shopify.com/s/files/1/0438/8909/8907/files/making_inferences_worksheet_for_grade_7.pdf
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/95644031450.pdf
    • https://cdn.shopify.com/s/files/1/0429/0222/5059/files/98165788391.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_off00006684.bin
da1920e2eeb91e5ad5bd833cbbb71726f17fa5b49a00b7d1b62f1d2d31bdf400		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6684 5448 bytes
font_01_sfnt_off00007906.bin
050f9bb0e827a9e61c3b7aaa98c2410c9c34234d0aa6f63f83e1d6b9e944047f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7906 11028 bytes

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