Malicious PDF — malware analysis report

Static analysis result for SHA-256 aad1874721dc6d60…

MALICIOUS

PDF

34.1 KB Created: 2020-08-10 03:06:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 51a0f037e6324c6c71bdfef47495d460 SHA-1: 46d294173d8636fc7ef7d91451ae29eae2618d52 SHA-256: aad1874721dc6d60cc6925d1d0eabcccd5900a4e1fa47a3ed6cbfa7f62496d96
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is likely intended to lead the user to a malicious site. The document also contains a large number of external PDF links, many hosted on Shopify, suggesting a link farm or SEO manipulation tactic to distribute malicious content. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.

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=being+belonging+becoming+educators+guide+pdf
    • http://files.menongoldstein.com/uploads/1/3/1/4/131438823/0abe59d8.pdf
    • http://files.maltascalemodelshop.com/uploads/1/3/2/6/132682281/72576aa5a.pdf
    • http://zafuk.suppesehconsulting.com/uploads/1/3/0/8/130813528/zagoxaseropux_xipolixudadi_gebosuz.pdf
    • http://mejuvo.natjonesartist.com/uploads/1/3/2/8/132814930/896964.pdf
    • http://files.theclinicnextdoor.com/uploads/1/3/1/3/131398419/4077ddca5.pdf
    • https://cdn.shopify.com/s/files/1/0429/9712/1178/files/55638086367.pdf
    • https://cdn.shopify.com/s/files/1/0435/3982/4799/files/7788995993.pdf
    • https://cdn.shopify.com/s/files/1/0432/1338/9992/files/90174608015.pdf
    • https://cdn.shopify.com/s/files/1/0433/1778/8830/files/goxanibeto.pdf
    • https://cdn.shopify.com/s/files/1/0427/9051/8940/files/26882940342.pdf
    • https://cdn.shopify.com/s/files/1/0433/3115/8175/files/logarithm_antilogarithm_table.pdf
    • https://cdn.shopify.com/s/files/1/0433/8358/6977/files/loxegarasifogobezim.pdf
    • https://cdn.shopify.com/s/files/1/0437/6294/2106/files/82132082582.pdf
    • https://cdn.shopify.com/s/files/1/0432/0870/4164/files/xusegeke.pdf
    • https://cdn.shopify.com/s/files/1/0431/6053/5196/files/history_books_urdu_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/5702/9019/files/27845930125.pdf
    • https://cdn.shopify.com/s/files/1/0440/5110/3894/files/fugegusimuzate.pdf
    • https://cdn.shopify.com/s/files/1/0439/0633/4888/files/luvok.pdf
    • https://cdn.shopify.com/s/files/1/0430/8199/0304/files/25142477533.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_off00004a06.bin
c4c7d3cddbf557735ade22dd1d5d6474f936f01e6951cc1668aed2a8e7aa6539		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A06 5664 bytes
font_01_sfnt_off00005d2f.bin
66608e67bb04b24a886b1d4807025854aa06cbe1b0e35a1a76be8e772c89c35b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D2F 8740 bytes

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