Malicious PDF — malware analysis report

Static analysis result for SHA-256 da56fe8ddd6da5b1…

MALICIOUS

PDF

42.2 KB Created: 2020-08-30 23:03:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7418f278d929857937cb56866aa75e34 SHA-1: ec35f990b68b2b8a785f1eb1cf1cf819ad48ff84 SHA-256: da56fe8ddd6da5b136d17ff86666a06b76e2d7a898f9595aee89e5fce21e2292
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a link to a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains the same URL and title as the malicious redirector link, suggesting a lure to a malicious site. No scripts were extracted, and the PDF structure itself does not indicate specific exploitation techniques beyond redirection.

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/wix?keyword=salut+l%2527ami+adieu+le+tr%25C3%25A9sor+telecharger
    • https://cdn.shopify.com/s/files/1/0428/4658/4999/files/nosaxesosud.pdf
    • https://cdn.shopify.com/s/files/1/0430/4610/9341/files/26024010956.pdf
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/evanescence_my_immortal_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0433/9249/9868/files/49213951411.pdf
    • https://cdn.shopify.com/s/files/1/0431/6332/0469/files/rename_pandas_column.pdf
    • https://cdn.shopify.com/s/files/1/0434/7029/1096/files/antiphonarium_cento.pdf
    • https://cdn.shopify.com/s/files/1/0431/5460/4198/files/44617907816.pdf
    • https://cdn.shopify.com/s/files/1/0433/6913/6284/files/90442395257.pdf
    • https://cdn.shopify.com/s/files/1/0440/1440/3742/files/aya_beshen_nude.pdf
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/69080046220.pdf
    • https://cdn.shopify.com/s/files/1/0436/9770/1032/files/ronitabone.pdf
    • https://cdn.shopify.com/s/files/1/0436/8554/4089/files/salevakopupuxisifanar.pdf
    • https://cdn.shopify.com/s/files/1/0428/0185/6668/files/momove.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000547f.bin
71578df7ace2a2f1a7eb4e5501cfae0522e1237165c2e0ca965a0df15ce2b8db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x547F 5408 bytes
font_01_sfnt_off00006693.bin
739caeb994b8e9e3fed3dc324ed09496261598060903e0c55396bb42e3d2d309		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6693 11636 bytes
font_02_sfnt_off00008bbf.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BBF 4324 bytes

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