Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a8d94ed90932db7…

MALICIOUS

PDF

42.9 KB Created: 2020-08-23 05:42:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 107d03a5d0db96ad75432925661f6acd SHA-1: 4b8b1ce8987b1e1b4c2f8eefe1abe8c454113c20 SHA-256: 9a8d94ed90932db792323cb711062960fbd57613ad40dd99ead5ea4188df11f8
128 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including one to a known malicious redirector (ttraff.cc). The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=free+simple+cv+template+psd', suggesting a lure for a CV template that ultimately leads to malicious infrastructure. The presence of numerous PDF links, many hosted on Shopify, indicates a link farm designed to attract search engine traffic, with the primary malicious link being the entry point.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.cc/pify?keyword=free+simple+cv+template+psd
    • http://files.banahawhealsspa.com/uploads/1/3/1/4/131437599/bibudofimodap_bejupajefe_dipiwubom_naguzobixawerow.pdf
    • https://cdn.shopify.com/s/files/1/0438/8962/3208/files/87946804834.pdf
    • https://cdn.shopify.com/s/files/1/0431/6866/1670/files/xunudakasaz.pdf
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/44974443006.pdf
    • https://cdn.shopify.com/s/files/1/0431/7085/7122/files/html_input_text_formatter.pdf
    • https://cdn.shopify.com/s/files/1/0430/7949/9940/files/charlotte_s_web_2006_full_movie_mp4.pdf
    • https://cdn.shopify.com/s/files/1/0445/7014/9023/files/11854130836.pdf
    • https://cdn.shopify.com/s/files/1/0463/6278/7995/files/cfa_program_curriculum_level_2.pdf
    • https://cdn.shopify.com/s/files/1/0431/4054/6714/files/panorilol.pdf
    • https://cdn.shopify.com/s/files/1/0429/3640/2079/files/85503722115.pdf
    • https://cdn.shopify.com/s/files/1/0431/1384/0793/files/gepinaj.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_off00006a25.bin
395fd2255c74d7dde679f4e6c828adb854506282f103e5462445f0ebc0e5a14f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A25 5232 bytes
font_01_sfnt_off00007be1.bin
b75eaafd57cf50d04b19dac08b8c59abcf50db71291501d509d6060ff6f22c01		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE1 10452 bytes

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