Malicious PDF — malware analysis report

Static analysis result for SHA-256 1aa8aa52f25fb760…

MALICIOUS

PDF

43.6 KB Created: 2020-08-22 11:16:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91f90a1eb814127b094e201959b9086e SHA-1: dd04349f582ee39290609fe013aa916cb058d2a9 SHA-256: 1aa8aa52f25fb76010b5f87a7ae28df076cacc619d052cbdd7af2956b2eac9df
120 Risk Score

Malware Insights

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

The PDF file contains a link farm and a direct link to a known malicious redirector, ttraff.com. The document body, though heavily obfuscated, contains text suggesting it is a 'Portfolio booklet template free', likely a lure. The primary malicious IOC is the redirector URL, which is designed to lead users to further malicious content. No scripts were extracted, limiting the analysis of the execution chain.

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.com/pify?keyword=portfolio+booklet+template+free
    • http://ronit.wonderthumb.com/uploads/1/3/1/3/131383483/8583517.pdf
    • http://muvusip.redlineinstallers.com/uploads/1/3/2/8/132814940/kefifin-zenigenekeg.pdf
    • https://cdn.shopify.com/s/files/1/0434/3591/7473/files/play_store_app_free_for_iphone.pdf
    • https://cdn.shopify.com/s/files/1/0427/8986/3580/files/76051943027.pdf
    • https://cdn.shopify.com/s/files/1/0431/6767/8618/files/kisitasogakavikiz.pdf
    • https://cdn.shopify.com/s/files/1/0429/8034/3967/files/bseb_10th_exam_date_2020_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/8940/2783/files/singly_linked_list_in_java.pdf
    • https://cdn.shopify.com/s/files/1/0432/2259/7796/files/mizulivojitasimuvexed.pdf
    • https://cdn.shopify.com/s/files/1/0430/8130/2167/files/fundamentals_of_logic_design_5th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0432/9373/7110/files/sowugimixadi.pdf
    • https://cdn.shopify.com/s/files/1/0430/3699/9842/files/riwazenu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1910/7480/files/5559474194.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_off00006e13.bin
ee0c5884d4feffeb6c7012e4f036c5be6dd367fa77bafee226ffe0a267f782d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E13 5076 bytes
font_01_sfnt_off00007f38.bin
2c7d831c48f6e4d28145c52f0d2191e08feb8049ab711628745b88aa98097e35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F38 10008 bytes

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