Malicious PDF — malware analysis report

Static analysis result for SHA-256 431a21e2826ac450…

MALICIOUS

PDF

43.0 KB Created: 2020-08-18 13:39:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94328400e463900c9eb51094e653a9e3 SHA-1: b4097dc021bce6d447808ae9edbcc160552bec66 SHA-256: 431a21e2826ac450ecbcc614ed776317b7c3fa30a7df8b80e40bc981225a9d55
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link redirects to known malicious infrastructure via 'ttraff.cc'. The document body, though heavily obfuscated, contains the text 'Dod interagency agreement template' and the malicious URL, suggesting a lure to trick users into clicking the link. The primary attack pattern involves redirecting users to malicious sites.

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.cc/pify?keyword=dod+interagency+agreement+template
    • http://juxixig.limehouse.info/uploads/1/3/1/4/131482975/6215328.pdf
    • http://files.snakities.com/uploads/1/3/2/8/132814387/8130971.pdf
    • https://cdn.shopify.com/s/files/1/0431/1026/9085/files/nubamubigejuzukirobogife.pdf
    • https://cdn.shopify.com/s/files/1/0431/4241/4487/files/2013_hyundai_elantra_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/9162/4097/files/awakenings_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/5381/7762/files/sefesumimiwil.pdf
    • https://cdn.shopify.com/s/files/1/0437/5409/4753/files/memumerozarusibonibone.pdf
    • https://cdn.shopify.com/s/files/1/0437/1097/2053/files/povuv.pdf
    • https://cdn.shopify.com/s/files/1/0437/6923/3557/files/mechanical_drawing_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0430/2897/1681/files/22421112634.pdf
    • https://cdn.shopify.com/s/files/1/0429/4977/1430/files/71358046580.pdf
    • https://cdn.shopify.com/s/files/1/0432/6978/3720/files/87218489971.pdf
    • https://cdn.shopify.com/s/files/1/0430/1216/1685/files/free_gantt_chart_template_microsoft_excel.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_off0000685f.bin
2172de1fa8a6c48e6f85a0930700636b28f8e624b3a00978c903d87bdef36040		 pdf-font-stream PDF embedded font (sfnt) at offset 0x685F 5316 bytes
font_01_sfnt_off00007a62.bin
7f64d9e4d78c8af959b5c5234ab164a7d670f7172f9ad3faac7de27385f5251d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A62 10696 bytes

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