Malicious PDF — malware analysis report

Static analysis result for SHA-256 37eda5df3a686114…

MALICIOUS

PDF

36.6 KB Created: 2020-08-10 12:58:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77f07fa5ef77b8f4e18dfe60e963b007 SHA-1: ce80def97239f4f8137a40ccf25491afebfb6df2 SHA-256: 37eda5df3a6861146342442c7a15fee590a255578418fdfc12a0eba746f366b8
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, characteristic of a link farm designed to manipulate search engine rankings or redirect users to malicious sites. One of the primary links, 'https://ttraff.ru/pify?keyword=bac+cooling+tower+manual+pdf', points to known malicious redirector infrastructure. The document body contains garbled text and some of the URLs, suggesting a lure to disguise the malicious intent.

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=bac+cooling+tower+manual+pdf
    • http://files.lexieslittlebearschildcare.com/uploads/1/3/2/8/132814996/e17f56af45ca99.pdf
    • http://files.sherricornett.com/uploads/1/3/0/7/130740221/wilubinapob-jagipa.pdf
    • http://files.eaglehavenwinery.com/uploads/1/3/0/9/130969405/1163919.pdf
    • http://files.unbrokenchainart.com/uploads/1/3/2/7/132740214/da709.pdf
    • http://melane.falsefloorcreative.com/uploads/1/3/2/8/132814930/puzuwesi.pdf
    • https://cdn.shopify.com/s/files/1/0427/9946/4611/files/dijaxorixakuzirow.pdf
    • https://cdn.shopify.com/s/files/1/0435/6859/5112/files/nigopuxirixevasov.pdf
    • https://cdn.shopify.com/s/files/1/0430/7540/3936/files/bodilowivo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6728/5410/files/bepakokedaxakexod.pdf
    • https://cdn.shopify.com/s/files/1/0440/2456/1829/files/vida_ejemplar_de_simon_bolivar.pdf
    • https://cdn.shopify.com/s/files/1/0429/2381/9164/files/absa_premiership_fixtures_2020_20.pdf
    • https://cdn.shopify.com/s/files/1/0430/8670/8889/files/51503893876.pdf
    • https://cdn.shopify.com/s/files/1/0439/1577/2059/files/mebabatasevizadisafu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7089/7824/files/nimosegigubo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9314/8313/files/chagas_enfermedad.pdf
    • https://cdn.shopify.com/s/files/1/0447/8484/4966/files/45951908446.pdf
    • https://cdn.shopify.com/s/files/1/0430/1763/3945/files/90226743590.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_off00004fa0.bin
286f85630dbb80b44684b4ab88cc610171b67bd79a13657d5a786f18ed90078c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FA0 5440 bytes
font_01_sfnt_off0000621d.bin
696138f1ccf7aa24c30b62ec6e4f74cc3fee8ce13bb453df9b51284d07b6376d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x621D 10420 bytes

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